Some Observations on Balantidium Coli and Entamœba Histolytica of Macaques
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چکیده
parts of salt solution. But when faeces from the monkey Silenus (Macacus) rhesus, which are invariably crammed with blastocystis, are inoculated into the above medium and incubated at 37?C.?the optimum temperature for growth of most of the intestinal protozoa of warm-blooded hosts?the fungus develops with very great rapidity, with consequent destruction of any Balantidium coli which may be present. Jameson (1927) has shown that Balantidium coli from the domestic pig can be readily cultivated in inspissated horse serum and egg white to which a little solid rice starch has been added ?a medium recommended by Dobell and Laidlaw (1926) for the cultivation of the entozoic amcebse, and especially of Entamoeba histolytica. Macaques of species Silenus rhesus obtained from dealers in the Calcutta markets are very heavily parasitized with a ciliate protozoon which corresponds morphologically with Balantidium coli of man, and some months ago we commenced attempts to cultivate this organism and to transfer it to human volunteers. Our
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