
This thin film micrograph reveals growing P. vivax trophozoites, and 1 ring with 3 chromatin dots; Mag. 1125X.

P. vivax trophozoites have a large quantity of ameboid cytoplasm, and a large amount of fine, yellowish-brown chromatin. The RBCs are enlarged by 1.5x to 2x, and may be distorted in shape, and as in this case, contain fine Schüffner’s dots.
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