Figure 1
From: First case of Plasmodium knowlesi infection in a Japanese traveller returning from Malaysia
Microscopic analysis of Giemsa-stained thin blood-smears from a patient infected with Plasmodium knowlesi malaria parasites. The blood smears were taken before (A), four hours after (B), and 16Â hours after treatment (C), respectively. A) Before mefloquine treatment the following blood-stage parasites were observed: a) band form, b) ring form, and c) schizont. B, C) Post-mefloquine treatment (B, C), the ring forms (d, e, g, h) and trophozoites (f, i) gradually changed into irregular forms. The parasitaemias calculated from slides A, B, and C were 0.2%, 0.05%, and 0.013%, respectively.