Reproductive development in male African green monkeys was characterized by evaluating both luteinizing hormone (LH) and testosterone (T) before and after gonadotropin releasing hormone (GnRH) stimulation in relation to the physical maturation of the testis. There were LH responses to GnRH at all ages studied, but the failure of some animals to respond at earlier ages suggested developmental changes in the responsiveness of the pituitary. The T secretion developed progressively but did not reach adultlike characteristics until approximately 44 months of age, at which time sperm could be demonstrated in ejaculated semen.
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Brady et al. (1985) studied this question.
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