Apicomplexa Infections

This thin film micrograph depicts a growing P. ovale trophozoite with a "ring" nucleus, using a Giemsa stain; Mag. 1125X. A photomicrograph of Plasmodium falciparum trophozoite in ring state using Wright's stain. (x1500) A photomicrograph of Plasmodium falciparum schizonts inside two erythrocytes using Wright's stains. (x1500) A photomicrograph of Plasmodium vivax in its erythrocytic trophozoite stage, using Wright's stain. x1500. A photomicrograph of Plasmodium vivax in its erythrocytic schizont stage, using Wright's stain. (x1500) A photomicrograph of Plasmodium vivax showing merozoites just prior to disruption using Wright's stain. (x1500) This drawing depicts Plasmodium malariae in its erythrocytic schizont stage using Wright's stain; Magnified x1500. A photomicrograph of Plasmodium malariae revealing developed erythrocytic merozoites using Wright's stain. (x1500) The "Ring Stage" of an erythrocytic trophozoite of the Plasmodium spp. life cycle. A growing erythrocytic trophozoite during the Plasmodium spp. life cycle. A mature erythrocytic trophozoite during the Plasmodium spp. life cycle. A young, immature schizont common to the Plasmodium spp. life cycle. An old, immature erythrocytic schizont during the Plasmodium spp. life cycle. A mature erythrocytic schizont during the Plasmodium spp. life cycle. A photomicrograph of a Plasmodium malariae trophozoite in ring stage using Wright's stain. (x1500) Photomicrograph of a blood smear showing Plasmodium falciparum rings in erythrocytes. A photomicrograph of placental tissue revealing the presence of the malarial parasite Plasmodium falciparum. Blood smear showing Babesia spp. rings with basophilic stippling within the erythrocytes. A photomicrograph of a blood smear showing erythrocytes containing developing P. vivax parasites, magnified 1000X. A photomicrograph of a blood smear showing erythrocytes containing developing P. vivax parasites, magnified 1000X. A photomicrograph of a blood smear showing erythrocytes containing developing P. vivax parasites, magnified 1000X. A photomicrograph of a blood smear showing erythrocytes containing developing P. vivax parasites, magnified 1000X. This micrograph depicts a growing Plasmodium vivax trophozoite; Mag. 1250X. A photomicrograph of a blood smear showing erythrocytes containing developing P. vivax parasites, magnified 1000X. A photomicrograph of a blood smear showing erythrocytes containing developing P. falciparum parasites, magnified 1000X. A photomicrograph of a blood smear containing a microgametocyte of the parasite Plasmodium ovale. A photomicrograph of a blood smear containing a macrogametocyte of the parasite Plasmodium falciparum. A photomicrograph of a blood smear containing a macrogametocyte of the parasite Plasmodium falciparum. A photomicrograph of a blood smear containing a macrogametocyte of the parasite Plasmodium falciparum. This photomicrograph of a blood smear contains a macro- and microgametocyte of the Plasmodium falciparum parasite. This is a micrograph of a blood smear containing a microgametocyte of the parasite Plasmodium falciparum. This photomicrograph of a blood smear contains a microgametocyte of the parasite Plasmodium falciparum. A photomicrograph of a blood smear containing a microgametocyte of the parasite Plasmodium falciparum. This photomicrograph of a blood smear shows a Plasmodium falciparum parasite in the ring stage of development. This photomicrograph shows a Plasmodium falciparum parasite in the ring stage, and containing Maurer’s dots. This photomicrograph shows a Plasmodium falciparum parasite in the ring stage, and containing Maurer’s dots. A photomicrograph of a blood smear with ring stage Plasmodium falciparum infected blood cells. This photomicrograph of a blood smear shows RBCs infected with Plasmodium falciparum during the parasite’s ring stage. A photomicrograph of a blood smear with Plasmodium malariae parasites infecting RBCs during the ring stage. A photomicrograph of a blood smear with Plasmodium malariae parasites infecting RBCs during the ring stage. This photomicrograph shows a mature Plasmodium malariae schizont within an infected RBC. This photomicrograph shows a mature Plasmodium malariae schizont within an infected RBC. This photomicrograph shows a growing Plasmodium malariae trophozoite within an infected RBC. This photomicrograph shows a mature Plasmodium malariae trophozoite within an infected RBC. This photomicrograph of a blood smear contains a microgametocyte of the parasite Plasmodium ovale. This photomicrograph of a blood smear contains both immature and mature trophozoites of the Plasmodium vivax parasite. This photomicrograph shows a red blood cell that is doubly infected by Plasmodium vivax during the ring stage. This photomicrograph shows a red blood cell being triply infected by Plasmodium vivax during the parasite’s ring stage. This photomicrograph shows a red blood cell being infected by Plasmodium vivax during its schizont stage. This photomicrograph of a blood smear contains a macrogametocyte of the parasite Plasmodium vivax . This photomicrograph shows a red blood cell being infected by Plasmodium vivax during the mature trophozoite stage. This photomicrograph of a blood smear contains a microgametocyte of the parasite Plasmodium vivax . This photomicrograph of a blood smear contains a microgametocyte of the parasite Plasmodium vivax. This photomicrograph of a blood smear contains a microgametocyte of the parasite Plasmodium vivax. This photomicrograph shows a red blood cell being infected by Plasmodium vivax in it’s schizont stage; Magnified 1000X. This thin film micrograph depicts an immature P. vivax schizont, ring form, and growing trophozoites; Magnified 1125X. This micrograph from a thin film depicts a mature Plasmodium vivax trophozoite (center); Magnified 1125X. This illustration depicts the life cycle of different species of Cryptosporidium, the causal agents of Cryptosporidiosis. This is an illustration of the life cycle of Isospora belli, the causal agent of Isosporiasis. This is an illustration of the life cycle of the parasites of the genus Plasmodium that are causal agents of Malaria. This is an illustration of the life cycle of Toxoplasma gondii, the causal agent of Toxoplasmosis. This micrograph of a thick film depicts an immature P. vivax schizont using Giemsa stain; Magnification 1125x. This micrograph of a thick film depicts a mature schizont of a P. vivax parasite using Giemsa stain; Magnification 1125x. This micrograph depict growing P. vivax trophozoites. This micrograph depicts a red blood cell containing four Plasmodium vivax rings, next to a growing trophozoite. This micrograph of a thick film depicts an immature P. vivax schizont using Giemsa stain; Magnification 1000x. This micrograph contains an ameboid trophozoite of the parasite Plasmodium vivax using Giemsa stain; Magnified 1000x. This thin film micrograph depicts P. vivax gametocytes stained with Giemsa stain; Magnified 1125X. This thin film micrograph depicts an immature P. vivax reddish microgametocyte; Magnified 1125X. This thick film micrograph contains a ring form trophozoite of the parasite P. vivax; Magnified 1125x. This thick film micrograph contains growing young ameboid trophozoites of the parasite P. vivax; Magnified 1125x. This micrograph of a thick film depicts an immature P. vivax schizont containing three chromatin masses; Magnified 1125x. This thick film micrograph depicts 3 mature P. vivax schizonts, 12 merozoites, and a ring trophozoite; Magnified 1125x. This micrograph of a thick film depicts a mature P. vivax trophozoite using Giemsa stain; Magnification 1125x. This micrograph contains an ameboid trophozoite of the parasite Plasmodium vivax using Giemsa stain; Magnified 1125x. This thick film micrograph depicts an old P. vivax ameboid trophozoite and visible Schuffners’ dots, Magnified 1125X. This thin film micrograph depicts a growing P. vivax trophozoite with conspicuous pigment granules, Magnified 1125X. This thin film blood smear micrograph depicts an immature P. vivax schizont with 14 chromatin masses; Magnified 1125X. This thin film micrograph reveals an old though still immature Plasmodium vivax schizont; Mag. 1125X. This blood smear micrograph depicts a Plasmodium vivax trophozoite. This thin film blood smear micrograph depicts a P. vivax ring with 2 chromatin dots; Magnified 1125X. This thin film blood smear micrograph depicts a P. vivax ring with 2 chromatin dots; Magnified 1125X. This thick film micrograph depicts two P. vivax trophozoites and fused platelets, Magnified 1125X. This thick film micrograph depicts growing ameboid P. vivax trophozoites, Magnified 1125X. This blood smear photomicrograph depicts a Plasmodium vivax microgametocyte. This thick film micrograph shows a number of P. vivax complete and incomplete ring stage trophozoites, Magnified 1125x. This thick film micrograph shows a young growing P. vivax trophozoite and some ring stage trophozoites, Magnified 1125x. This thin film blood smear micrograph depicts a growing P. vivax trophozoite; Magnified 1125X. This thick film photomicrograph indicates the presence of a "mixed" Plasmodium spp. infection. This thick film photomicrograph indicates the presence of a "mixed" Plasmodium spp. infection. This thick film micrograph depicts a Plasmodium vivax microgametocyte, Magnified 1125x. The edema exhibited by this African child was brought on by nephrosis associated with malaria. A Giemsa stain of a blood film from an infected human was used to identify the parasite Babesia microti. This is a female Anopheles mosquito feeding on a human arm. Only the female mosquito feeds on blood. This is an Anopheles gambiae mosquito, which is a known vector for the malarial parasite. This thick film specimen reveals a young ameboid Plasmodium malariae trophozoite displaying non-distinct pigment. This thick film specimen reveals a mature schizont, 8 P. malariae merozoites, and a pigment clump. This thick film specimen reveals a young growing P. malariae trophozoite. This thick film specimen reveals a growing Plasmodium malariae trophozoite. This thick film specimen reveals an old growing P. malariae trophozoite displaying good, clean chromatin. This thick film slide reveals a mature P. malariae schizont displaying non-distinct cytoplasm, containing 9 merozoites. This thick film photomicrograph depicts two young, growing Plasmodium malariae trophozoites. This photomicrograph depicts a growing Plasmodium malariae trophozoite. This thick film photomicrograph depicts a growing Plasmodium malariae trophozoite using Giemsa stain; Magnified 1125X. This photomicrograph depicts a compact Plasmodium malariae parasite in its ring stage with double dots. This photomicrograph depicts a compact Plasmodium malariae trophozoite using Giemsa stain; Magnified 1125X. This thin film photomicrograph depicts a Plasmodium malariae ring using Giemsa stain; Magnified 1125X. This thick film photomicrograph depicts mature Plasmodium malariae schizonts using Giemsa stain; Magnified 1125X. This thick film photomicrograph depicts a mature Plasmodium malariae schizont using Giemsa stain; Magnified 1125X. This thin film photomicrograph depicts a Plasmodium malariae macrogametocyte. This thin film photomicrograph depicts a growing P. malariae “bond form” trophozoite amongst smaller than normal RBCs. This thick film photomicrograph depicts Plasmodium malariae parasites, and an artifactual bacillus bacterium. This photomicrograph depicts a Plasmodium malariae trophozoite within a small RBC, using Giemsa stain; Magnified 1125X. This thin film photomicrograph depicts an immature Plasmodium malariae schizont using Giemsa stain; Magnified 1125X. This thin film photomicrograph depicts a mature Plasmodium malariae trophozoite using Giemsa stain; Magnified 1125X. This thick film micrograph depicts a number of P. vivax rings and an old trophozoite using Giemsa stain; Magnified 1125X. This thin film photomicrograph depicts a mature Plasmodium malariae trophozoite that resembles a macrogametocyte. This thin film micrograph depicts a Plasmodium malariae microgametocyte. This photomicrograph of liver tissue taken at autopsy depicts P. malariae using oil immersion technique; Magnified 1125X. This photomicrograph depicts an old immature Plasmodium malariae schizont using Giemsa stain; Magnified 1125X. This thin film micrograph shows an old growing Plasmodium malariae trophozoite using Giemsa stain; Magnified 1125X. This thick film photomicrograph depicts a Plasmodium malariae gametocyte, using Giemsa stain technique. This micrograph of spleen tissue taken at autopsy depicts P. malariae using oil immersion technique; Mag. 1125X. This thin film micrograph shows a mature P. malariae schizont containing 8 merozoites, each with invisible cytoplasm. This thin film micrograph shows a mature, pigmented P. malariae trophozoite, stretched chromatin and irregular cytoplasm. This thin film micrograph shows a growing, rounded P. malariae trophozoite within a slightly smaller than normal RBC. This thin film photomicrograph shows large Plasmodium falciparum rings using a Giemsa stain; Magnification 1125X. This photomicrograph shows numerous Plasmodium falciparum rings; Magnification 1150X. Giemsa stain shows an Aotus monkey's parasitized blood containing P. Falciparum taken after 48 hours of incubation. This was a stool smear micrograph revealing Cryptosporidium parvum as the cause of this patient’s Cryptosporidiosis. This photomicrograph depicts P. falciparum rings along with various broken ring forms, white cell nuclei and platelets. This thick film photomicrograph shows a Plasmodium falciparum gametocyte with both cytoplasm and pigment evident. A thin film photomicrograph shows a mature trophozoite of the parasite Plasmodium ovale. This thin film shows an immature schizont of the parasite P. ovale along with four chromatin masses, and rounded RBCs. This photomicrograph shows a microgametocyte of the parasite Plasmodium ovale. Using a Giemsa stain this photomicrograph reveals a P. ovale ring with double chromatin dots; Magnification: 1125X. This thick film micrograph shows a mature P. ovale trophozoite with apparent light cytoplasm, pigment and stippling. This thick film photomicrograph reveals evidence of the malaria causing parasite Plasmodium ovale. This photomicrograph shows a growing Plasmodium ovale trophozoite within an oval RBC. This thin film micrograph depicts two P. ovale ring form trophozoites; one in rounded RBC, and one in oval RBC. His thick film blood smear photomicrograph reveals an elongated Plasmodium falciparum gametocyte. This photomicrograph of P. ovale parasites shows an immature schizont with ten chromatin masses and two rings. This photomicrograph reveals a young, immature Plasmodium ovale schizont. This blood smear photomicrograph reveals a growing Plasmodium ovale trophozoite within a fimbriated oval RBC. This micrograph of P. ovale shows growing trophozoites with irregular cytoplasm, evident pigmentation, with no stippling. This photomicrograph reveals a mature Plasmodium ovale schizont with containing twelve merozoites. This photomicrograph reveals a growing Plasmodium ovale trophozoite within an elongated, teardrop-shaped RBC. This micrograph shows a P. falciparum macrogametocyte (Lt), and a growing P. malariae trophozoite (Rt). This photomicrograph of a thick blood smear reveals an elongated Plasmodium falciparum gametocyte. This thick blood smear photomicrograph reveals a comma-shaped Plasmodium falciparum parasite. This thick film photomicrograph depicts P. falciparum parasites in the form of numerous rings; Giemsa stain; Mag. 1124X. This thick film micrograph depicts a P. falciparum gametocyte, and a P. malariae growing trophozoite, Mag. 1125X. This thin film blood smear reveals two ring form Plasmodium falciparum parasites using Giemsa stain; Mag. 1125X. This thin film blood smear reveals a number of Plasmodium falciparum ring form parasites using Giemsa stain; Mag. 1125X. This thin film blood smear reveals a P. falciparum macrogametocyte using Giemsa stain; Mag. 1125X. This micrograph reveals both a growing Plasmodium falciparum trophozoite and ring form of this parasite. This thick film blood smear micrograph reveals a rounded P. falciparum gametocyte in the center of this slide. This thick film micrograph reveals two elongated Plasmodium falciparum gametocytes with pinkish cytoplasm. This thick film micrograph reveals two Plasmodium falciparum gametocytes; one is crescent-shaped (Lt.). This micrograph shows two species of malarial parasites, P. falciparum and P. malariae, Giemsa stain; Mag. 1125X. This thin film micrograph reveals five P. falciparum rings; four with one chromatin dot, and one with two chromatin dots. This thin film micrograph revealed a P. falciparum ring, inside an RBC along with Maurer's dots; Giemsa stain, Mg. 1125X. This thick film Aotus monkey blood smear reveals P. falciparum parasites after 72hrs of incubation using a Giemsa stain. This thick film Aotus monkey blood smear reveals P. falciparum parasites after 24hrs of incubation using a Giemsa stain. This thick film blood smear reveals three P. falciparum rings, one with 2 chromatin dots, and an elongated gametocyte. Note the pinkish, elongated Plasmodium falciparum gametocytes in the field of this thick film micrograph. This blood smear micrograph revealed the presence of P. falciparum rings form parasites; Mag. 1125X. This blood smear micrograph revealed the presence of numerous P. falciparum rings form parasites; Mag. 1150X. This thin film micrograph reveals a reddish colored Plasmodium falciparum microgametocyte with distinct pigment. This blood smear photomicrograph reveals a Plasmodium falciparum gametocyte. This thick film micrograph reveals P. falciparum rings amongst debris with chromatin only, and no visible cytoplasm. Note the rounded P. falciparum gametocyte with visible chromatin and pigment, but no evident cytoplasm. This thick film blood smear revealed a slightly ovoid P. falciparum gametocyte, and 3 ring staged organisms. This thick film micrograph revealed an elongated, lightly pink-stained Plasmodium falciparum gametocyte. This micrograph revealed a number of P. falciparum rings, and a growing trophozoite; Mag. 1125X. This thin film blood smear micrograph depicts a Plasmodium falciparum macrogametocyte parasite. This thin film blood smear micrograph depicts a Plasmodium falciparum macrogametocyte parasite. This thin film blood smear micrograph depicts a Plasmodium falciparum parasite microgametocyte. This thin film micrograph revealed two P. falciparum rings, Maurer's dots, and crenated red blood cells. This micrograph revealed an immature Plasmodium falciparum schizont (Cntr), and a ring form (Lower Rt). This micrograph depicts a Plasmodium vivax ring within a RBC that also contains Maurer's dots. This micrograph reveals an artifact, which resembles a Plasmodium falciparum gametocyte. This thin film micrograph depicts an immature P. vivax schizont with 5 chromatin masses, using Giemsa stain; Mag. 1000X. This thick film smear revealed an immature P. vivax schizont, rings, and growing trophozoites, Giemsa stain; Mag. 1125X. This thin film micrograph depicts an immature P. vivax schizont with 8 chromatin masses, using Giemsa stain; Mag. 1000X. This blood smear micrograph revealed the presence of Plasmodium vivax ring stage parasites. This thick film micrograph depicts a mature, and a compact growing P. vivax trophozoite using a Giemsa stain; Mag. 1125X. This micrograph depicts a compact, growing Plasmodium vivax trophozoite; Mag. 1250X. This thin film micrograph depicts a Plasmodium vivax ring form, and a growing ameboid trophozoite; Mag 1125X. This thin film micrograph depicts an immature Plasmodium vivax schizont with three chromatin masses; Mag 1125X. This photomicrograph depicts an immature Plasmodium vivax schizont (Cntr.); Mag 1125X. This thin film micrograph depicts an immature Plasmodium vivax schizont, and an old trophozoite; Mag. 1125X. This thick film micrograph depicts a number of P. vivax rings, and a young trophozoite, using Giemsa stain; Mag. 1125X. This thick film micrograph depicts a mature Plasmodium vivax schizont, and a growing trophozoite. This blood smear micrograph depicts P. vivax, but is poorly stained, and does not properly reveal Schüffner’s dots. This thick film micrograph reveals a mature P. vivax schizont using Giemsa stain, but no Schüffner’s dots; Mag. 1125X. This poorly stained micrograph shows growing P. vivax trophozoites, but does not properly reveal Schüffner’s dots. This thick film micrograph depicts a mature Plasmodium vivax schizont, using Giemsa stain; Mag. 1125X. This photomicrograph shows a growing Plasmodium vivax trophozoite; Mag. 1250X. This thin film micrograph depicts a mature Plasmodium vivax schizont with 20 merozoites, using Giemsa stain; Mag. 1000X. This thin film micrograph depicts ring form Plasmodium vivax infected RBCs; one RBC contains two rings. This blood smear photomicrograph depicts a Plasmodium vivax microgametocyte; Mag. 1000X. This blood smear photomicrograph depicts a Plasmodium vivax macrogametocyte. This micrograph reveals the presence of three P. vivax ring form parasites inside infected host RBCs; Mag. 1000X. This blood smear micrograph revealed the presence of a Plasmodium vivax ring form. This thin film micrograph reveals growing P. vivax trophozoites, and 1 ring with 3 chromatin dots; Mag. 1125X. This thick film photomicrograph depicts a mature Plasmodium vivax trophozoite, using Giemsa stain; Mag. 1250X. This blood smear photomicrograph depicts a Plasmodium vivax macrogametocyte; Mag. 1250X. This thin film photomicrograph depicts a mature Plasmodium vivax trophozoite with prominent pigment; Mag. 1125X. This thick film micrograph depicts a compact ring form Plasmodium vivax trophozoite with no Schüffner's dots; Mag. 1125X. This thick film micrograph depicts mature, and growing Plasmodium vivax trophozoites; Mag. 1125X. This thin film micrograph depicts a Plasmodium vivax microgametocyte with blue cytoplasm; Mag. 1125X. This thin film micrograph depicts 2 ring form Plasmodium vivax parasites, each with 2 chromatin dots; Mag. 1125X. This thick film micrograph shows growing P. vivax trophozoites, but no Schüffner's dots, using Giemsa stain; Mag. 1125X. This thin film micrograph depicts a P. vivax ring with a chromatin mass in its center, using Giemsa stain; Mag. 1125X. This thin film micrograph depicts a “tennis racket”-shaped P. vivax ring, using Giemsa stain; Mag. 1125X. This thin film micrograph depicts a Plasmodium vivax ring with no Schüffner's dots, using Giemsa stain; Mag. 1125X. This thin film micrograph depicts a P. vivax ring with basophilic stippling in the RBC, using Giemsa stain; Mag. 1125X. This micrograph depicts a mature Plasmodium ovale schizont containing separated merozoites; Mag. 1000X. This thin film micrograph depicts a growing, ring-shaped Plasmodium ovale trophozoite within a slightly oval RBC. This thin film slide shows a doubly-infected oval RBC growing two P. ovale trophozoites and a single growing trophozoite. This thick film blood smear micrograph depicts various stages of Plasmodium ovale schizonts and merozoites. This photomicrograph depicts a young immature Plasmodium ovale schizont. This thick film micrograph reveals an artifact caused by a mold resembling a P. falciparum gametocyte. These Giemsa stained hamster red blood cells contain both Babesia microti and Plasmodium berghei; Mag. 1125X. These Giemsa stained hamster red blood cells contain both Babesia microti and Plasmodium berghei; Mag. 1125X. These Giemsa stained hamster red blood cells contain both Babesia microti and Plasmodium berghei; Mag. 1125X. These Giemsa stained hamster red blood cells contain both Babesia microti and Plasmodium berghei; Mag. 1125X. Debris on this red blood cell (Cntr) produced an artifact that resembled a malaria parasite, using Giemsa stain; Mag. 1150X. This thick film micrograph depicts a mature Plasmodium vivax trophozoite, using Giemsa stain; Mag. 1125X. This blood smear micrograph revealed a clump of platelets that resembled a malarial schizont using Giemsa stain, Mag. 1000x. This thick film micrograph revealed growing Plasmodium spp. trophozoites; Schüffner's dot stippling is clearly defined. This thick film micrograph depicts a growing Plasmodium malariae trophozoite using Giemsa stain; Mag. 1125X. This thin film micrograph reveals Plasmodium malariae parasites using a Giemsa stain; Mag. 1125X. This thick film micrograph depicts a mature Plasmodium malariae trophozoite with prominent pigmentation. This thin film micrograph depicts a mature Plasmodium malariae schizont containing 10 merozoites. This blood smear photomicrograph depicts a mature Plasmodium malariae schizont. This thick film micrograph reveals five old, growing Plasmodium malariae trophozoites. This thin film micrograph depicts both P. malariae schizonts and trophozoites in various stages of development. This thick film blood smear micrograph depicts immature staged Plasmodium malariae schizonts. This thin film micrograph reveals a red blood cell containing two ring form P. vivax parasites; Mag. 1125X. This thin film micrograph revealed a Plasmodium vivax macrogametocyte with distinct Schufner's dots; Mag. 1125X. This thin film micrograph reveals two P. vivax rings, each bearing different morphological characteristics; Mag. 1125X. This thin film micrograph revealed a mature Plasmodium vivax schizont containing 18 merozoites; Mag. 1125X. This thick film micrograph revealed a mature Plasmodium vivax schizont containing 20 merozoites; Magnified 1125x. This micrograph of a direct fecal smear is stained to detect Cryptosporidium sp., an intracellular protozoan parasite.