PMC3658244_01
Microscopic findings of the growing stages of Plasmodium species in erythrocytes, which are known to be the merozoite, trophozoite, schizont, and gametocyte stages. Ring forms of two early trophozoites can be observed in an enlarged erythrocyte (left). The presence of more than 16 merozoites in a mature schizont suggests P. vivax infection (center). The presence of a round gametocyte in an enlarged erythrocyte also suggests P. vivax infection (right). . Note: Giemsa stainings, original magnification x1000.
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After the ring form, schizont, and gametocyte of this parasite were determined (Figure 1), the results of the subsequent rapid diagnostic test and DNA assay led to a diagnosis of vivax malaria.