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Mean number (±sem) of kisspeptin cells in the preoptic area of normal, adult female (n = 4) and male (n = 4) sheep (experiment 1) and control (n = 5) and prenatal T (n = 4) female sheep (experiment 2). Males had significantly fewer preoptic kisspeptin cells than females (*, P < 0.05), but prenatal T females did not differ from controls.
