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June 1914


Author Affiliations

Captain Medical Corps, U. S. Army FORT LEAVENWORTH, KANSAS

From the U. S. Army Central Department Laboratory.

Arch Intern Med (Chic). 1914;XIII(6):917-944. doi:10.1001/archinte.1914.00070120079008

The observations on the parasitic amebas that have been made within recent years have emphasized the importance of distinguishing between the species parasitic in the intestine of man, and it is the purpose of this contribution to give, as briefly as possible, the chief morphological points on which such a differentiation must rest, and the technic that I have found most helpful in demonstrating the morphology of these parasites. In order that what follows may be clear, a brief review of our present knowledge of the intestinal entamebas of man is necessary.

HISTORICAL ACCOUNT  In 1903, Schaudinn1 described and differentiated two species of entamebas parasitic in the intestine of man. One of these, the cause of the disease known as amebic dysentery, he named Entamoeba histolytica, while the other, a harmless commensal, he named Entamoeba coli.In 1905, while studying these parasites in soldiers invalided home from the Philippine

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