Caption accompanying photograph: Plate V. The exogenous cycle of the malaria parasite.
The Oocyst [x 560]
1. First stage of nuclear multiplication.
2. Initial formation of sporoblastoids.
3. Multiplication of the nucleus of the sporoblastoids. The nuclei rise to the surface of each sporoblastoid.
4. Continuation of nuclear division.
5-6. Development of sporozoites.
7. Mature oocysts. Sporozoites and residual bodies.
8. Mature oocysts.
9-10. Sporozoites in salivary glands.
11. Free sporozoites (x 1620).

Italy – Hackett – Missiroli – Figures/Drawings, undated. Rockefeller Foundation records; Photographs – Series 100-1000; International – Series 100; Malaria – Subseries 100I; Rockefeller Archive Center.