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Malaria
[Plasmodium falciparum] [Plasmodium malariae]
[Plasmodium ovale] [Plasmodium vivax]

Plasmodium malariae: Ring Stage Parasites

Smears from patients:

Plasmodium malariae rings have sturdy cytoplasm and a large chromatin dot.  The red blood cells (RBCs) are normal to smaller than normal (3/4 ×) in size.

Rings of P. malariae in a thin blood smear Rings of P. malariae in a thin blood smear Rings of P. malariae in a thin blood smear
A B C

A, B, C: Ring forms in thin blood smears.

Rings of P. malariae in a thick blood smear
D

D: A thick blood smear showing two rings (lower right) and a gametocyte.

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