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The effect of whole-body radiation on the fertility of male rats has been examined by systematic weekly matings of the treated males. Animals given 200 r did not become sterile, whilst 300 r caused sterility associated with oligospermia during the ninth and tenth weeks after treatment; 500 r caused prolonged sterility from the sixth week after treatment. A comparison with the known effects of radiation on the fertility of male mice indicates that both the sensitivity of spermatogenic cells and the duration of spermatogenesis are different in the rat and mouse.
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Craig et al. (1959) studied this question.
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