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The Microscopic Diagnosis of Malaria

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Course Introduction   |   Overview   |   Plasmodium falciparum   |   Plasmodium vivax

Plasmodium ovale   |   Plasmodium malariae   |   Other infections   |   Tests

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Lesson 3 Plasmodium vivax Trophozoites, Thin Film

 

1. Immature trophozoites are about one-third the diameter of the host cell.

 

2. Trophozoites have larger nuclei and thicker cytoplasm than seen in P. falciparum.

 

3. Mature trophozoites can be amoeboid with large vacuoles that fill enlarged and distorted RBCs that are infected.

 

4. Parasites might contain a fine yellowish-brown mass of pigment.

Summary of Characteristics