Word: oxyhemoglobin
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Dates: during 1930-1939
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Anatomists have long held that white skins are tinted by three pigments: melanin, a black chemical; hemoglobin, a reddish substance which colors the blood; oxyhemoglobin, a form of hemoglobin in combination with oxygen. They also believed that Negroes and Orientals are darker than Caucasians partly because of the presence of some special, unknown pigment in their skins...
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