Abstract
Human chorionic gonadotropin (hCG) is a heterodimeric glycoprotein hormone involved in the maintenance of the corpus luteum in early pregnancy. The free -subunit of hCG has a biological activity of its own, namely, stimulation of prolactin secretion from term pregnancy decidual cells [Blithe, D. L., et al. (1991) Endocrinology 129,
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