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Soma areas of SNB motoneurons at P28 for normal males, untreated castrates (castrate), castrates treated with estradiol implants from P21–P28 (castrate + E21–28), and normal males treated with estradiol implants from P21–P28 (normal + E21–28). Bar heights represent means ± SEM for four to seven animals per group. * denotes significantly different from normal males.
