Absence of Sickling Phenomenon of the Red Blood Corpuscle Among Brazilian Indians

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Abstract
No sicklemics were found in a survey of 1,379 full-blooded Brazilian Indians, 172 of whom were crossing intertribes. Three sicklemics were discovered among 166 Fulnio Indians (Aguas Bellas, State of Pernam-buco); this tribe is highly mixed with negroes and mestizos. In the Indian villages of "Taunay" and "Lalima" (Miranda district, State of Mato Grosso), 4 sicklemics with ascendants of Tereno Indian, white and negro, were found. No sicklemics were found, however, among 1,424 crossbreeds of white and Indian ("mameluco" or "caboclo") of Mato Grosso, Federal Territory of Amapa, Amazonas and Pernambuco States. The data suggest that the sicklemia test may be valuable as an auxiliary test in anthropology. The sicklemia index is best detd. by the method of Emmel (1945; 1915).

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