Cells

Leishmania tropica amastigotes in macrophage from skin Rickettsia tsutsugamushi budding from mouse peritoneal mesothelial cell. Phagocytosis of Rickettsia tsutsugamushi by mouse peritoneal mesothelial cell. Rickettsia tsutsugamushi within intact phagocytic vacuole of mouse peritoneal mesothelial cell. Rickettsia tsutsugamushi within the remains of a phagocytic vacuole of mouse peritoneal mesothelial cell. Rickettsia tsutsugamushi dividing within the cytoplasm of a mouse peritoneal mesothelial cell. Multiple Rickettsia tsutsugamushi free within the cytoplasm of a mouse peritoneal mesothelial cell. This presentation highlights the history, chemistry, and uses of ricin, a highly toxic poison made from castor beans.