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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 5 ─ Plasmodium malariae Trophozoites, Thin Film
1. Infected cells are normal or slightly smaller in size, occasionally with Ziemann’s stippling in trophozoite-infected RBCs.
2. Ring trophozoites have a single nucleus with denser cytoplasm and smaller vacuoles than P. vivax; binucleate trophozoites are occasional.
3. Trophozoites may form bands without vacuoles and with peripheral coarse chromatin and black or greenish-brown pigment.
4. “Basket-form” trophozoites with eccentric circular vacuoles are seen more often in P. malariae than in other species.
Summary of Characteristics