The Relation of Plasmodium Vivax and Plasmodium Praecox to the Red Blood Cells of Their Respective Hosts as Determined by Sections of Blood Cells

Herbert L. Ratcliffe Department of Protozoology, School of Hygiene and Public Health, Johns Hopkins University

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Summary and Conclusions

The best method of getting a correct picture of the relation of the malarial parasites to the red blood cells is by fixing fresh blood, sectioning it very thin, and studying cross sections of the red blood cells which are parasitized. This has been done with the organisms of avian and human malaria, Plasmodium praecox and Plasmodium vivax respectively, and the parasites have been found invariably to be intracellular. The other species of plasmodia of man have not been available.

Author Notes

The writer wishes to express his appreciation to Dr. Robert Hegner under whose direction this work was carried out.