目前多数体外受精方案是以精子上游方法来准备所用精子。体内经宫颈粘液选拔活动精子的情况类似,也是从精液标本中重获活动力更好的精子。但这一方法在从少精、精子活动差或粘滞性太大的精液标本中重获有用的精子则很少或甚至没有。另一方面,与精子上游相比较,通过玻璃纤维柱过滤,结果从精液质量相对较 Most current IVF programs use sperm upstream to prepare sperm for use. In vivo selection of sperm by cervical mucus activities similar to the situation, but also from semen specimens to regain motility better sperm. But this method has little or no benefit in regaining useful sperm from oligosperms, poor sperm motility or too viscous semen samples. On the other hand, compared with the upstream of the sperm, filtered through a glass fiber column, the result is relatively sperm quality