Plasmodium falciparum:
Ring Stage Parasites
Fig. 1: Normal red cell; Figs. 2-10: Increasingly mature ring stage parasites.
courtesy of the CDC and Coatney GR, Collins WE, Warren M, Contacos PG. The Primate Malarias. U.S. Department of Health, Education and Welfare, Bethesda, 1971.