方法采取2477例不育男性的外周血进行染色体核型分析。
Methods Karyotypes of 2477 infertile men were analyzed by chromosome G banding and C banding analysis.
大约40%的不育男性患有精索静脉曲张，比正常人群比例高。它与不育的关系并不被所有专家接受。
About 40 per cent of infertile men have varicoceles, many more than in the general population, though the link to infertility is not universally accepted by specialists.
男性不育越来越常见。
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