Meanwhile,there was an additional band located in the Y chromosomal short arm.Conclusion: Lack of acrosome,low acrosin activity and abnormality of chromosome may be the main reasons f...

• 结论:圆头精子症患者的精子顶体缺如、顶体酶活性降低以及染色体异常可能是导致不育的一个主要原因。