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Plasmodium falciparum plasmodial merozoite invasion of an erythrocyte

Image Number: 251902C

Caption:

Plasmodium falciparum plasmodial merozoite making initial contact with an erythrocyte (red blood cell) membrane at the beginning of erythrocyte invasion. The invasive merozoite has a distinct trilaminar membrane (brown). The merozoite cytoplasm contains a rhoptry neck or duct and rhoptry bulbs (purple), a nucleus (yellow), ribosomes (green), micronemes (rust brown) and mitochondria (pink). Malaria is caused by Plasmodium spp., parasitic single-celled protozoans called plasmodia. Malaria is spread to humans by species of tropical mosquitoes (Anopheles species). Infection spreads from the liver to the blood, where the plasmodium multiplies inside red blood cells. The plasmodial parasite reproduces asexually in the red blood cells significantly destroying many red blood cells. There are four stages of the parasite that develop in human red blood cells - merozoite stage, ring stage, trophozoite stage and schizont stage. Release of mature Plasmodium merozoites results in further infection and produces bouts of shivering fever (paroxysms) and sweating that may be fatal.

Keywords:

| 07.01.07 251902C medical blood blood cells red blood cells malaria RBC plasmodium blood infection human disease infected red blood cell infected red blood cells malaria infected red blood cell malaria infected red blood cells malaria infection Plasmodium falciparum red blood cell merozoite stage merozoitemalaria parasite malaria parasites protozoa protozoan paroxysms chills disease vector erythrocyte erythrocytes fever insect vector malaria vector TEM plasmodia parasite parasitic protozoans asexual reproduction RBCs liver infection plasmodial parasite trilaminar membrane rhoptry rhoptry neck rhoptry bulb microneme micronemes human blood infected human blood malaria merozoite stage plasmodium merozoite stage blood cell |

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