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Hepatic cells were evaluated using scintillation scanning and counting, autoradiography, and planimetry under conditions favoring extrarenal Ep production. In general, Kupffer cell activity paralleled Ep production whereas the liver parenchymal cells did not manifest significant changes. The studies suggest that the Kupffer cell may be an extrarenal cellular site of Ep production.
Naughton et al. (Thu,) studied this question.