Studies on protamine mrna in sperms of infertile rats induced by adenine .
腺嘌呤诱导不育大鼠精子中精蛋白mrna的研究。
Infertile couples may be spared years of fruitless treatment with the discovery that the human egg can read the father 's genetic key and screen out failures .
Item 5 of preceding paragraph does not apply to infertile female workers .
前项第五款之工作对不具生育能力之女工不适用之。
Individuals born with these exceptional chromosome combinations have various problems of physical development or are infertile .
天生带有这种例外的染色体复合构成的个体,将有各种各样的生理发育的障碍或者没有生育能力。
Scientists have repeatedly shown that giving men a combination of testosterone and progestin -- the same hormone used in birth control for women -- will reduce sperm count and make some 90 % of men temporarily infertile .