JUERGEN BERGER / SCIENCE PHOTO LIBRARY JUERGEN BERGER / SCIENCE PHOTO LIBRARY
Malaria infected red blood cell. Coloured scanning electron micrograph (SEM) of a erythorocytes (red blood cells). The cell at upper right is misshapen due to infection with a Plasmodium falciparum protozoan. This is the merozoite stage of the protozoan parasite. It invades red blood cells after the sporozoite stage is injected into the blood by an Anopheles mosquito. The merozoites replicate and destroy the red blood cell, causing anaemia. They may then invade more red blood cells, causing the severe cyclic fevers of malaria. The infected red blood cells may clot and block blood vessels. Magnification: x7,000 when printed at 10 centimetres wide.
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