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fetal period |
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fetal period, n the stage between the third and ninth months of in utero human development, during which there is growth of preformed structures. |
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There was a similar increased sensitivity in the fetal period for direct-acting nitrosoureas, but no such increased fetal sensitivity was detected for carcinogens requiring metabolic activation. We assumed that these differences are based on physiological and environmental factors known to occur over the transition from the fetal period to the neonatal period. Furthermore, eight weeks is designated by scientists as the end of the embryonic period and the beginning of the fetal period. |
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fetal period
