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ABSTRACT
The distribution of α-interferon in human placental tissue was investigated by immunocytochemical study of paraffin wax-embedded tissue sections using a sheep α-interferon antiserum. Fifty-eight placentas of gestational ages from 8 to 40 weeks were examined.
α-Interferon was present in the syncytiotrophoblast of the chorionic villi of all placentas and was also in macrophages in 28 cases. The appearances suggest production of interferon in human placental trophoblast and, in view of its diverse biological effects, support the concept of a role for α-interferon in the complex series of events required for successful gestation.
J. Endocr. (1988) 119, 531–534