reproductive system
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• males show normal fertility, no differences in litter size produced by males, no differences in testis size or histology, and normal sperm motility and histology
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• sperm counts are reduced by about 20% in 12-16 week-old males
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growth/size/body
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• no differences in body weight or body length
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cellular
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• sperm counts are reduced by about 20% in 12-16 week-old males
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