检验精子的血型或研究精子的生化特性,均需将精子从精浆或其它干扰物(阴道液、血液、尿液、汗液、乳汁等)分离出来。等密度离心法对分离不同密度的粒子是一种较好的先进方法。其特点是梯度液在离 Examining sperm’s blood type or studying the biochemical properties of sperm requires semen to be separated from the seminal plasma or other interferents (vaginal fluid, blood, urine, sweat, milk, etc.). Iso-density centrifugation is a better method of separating particles of different densities. It is characterized by gradient in the liquid