Plasmodium ovale

Ring form

- Enlarged RBCs

- Sometimes with fimbriated edges (oval)

- Schüffner's dots appear in the beginning and more pronounced than in P. vivax

Young trophozoite

- No more ringform

- Enlarged RBCs

- Sometimes with fimbriated edges (oval)

- Schüffner's dots appear in the beginning and more pronounced than in P. vivax

Growing trophozoite; Schüffner's dots

- Less ameboid trophozoite

- Enlarged RBCs

- Sometimes with fimbriated edges (oval)

- Schüffner's dots appear in the beginning and more pronounced than in P. vivax

Young schizont

- Immature schizont with three to four nuclei (chromatin)

- Pigment is not visible.

Mature schizont

- Contains 8 merozoites

- Separately visible

- Pigment in 1 or 2 clumps

- Peripheral or central

Macrogametocyte (left)

- Enlarged RBCs

- Chromatin small

- Eccentric and dark red

- Cytoplasm homogeneous

• blue
• without vacuoles
• pigment scattered

Macrogametocyte smaller than the RBC

Microgametocyte (right)

- Chromatin mass larger than in microgametocyte

• Eccentric or central
• diffuse
• light red

- Cytoplasm from light blue to pink

- Pigment finer; scattered

- Microgametocyte is smaller than the RBC.