Effect of surfactants on the sperm motility assessed by the Sander-Cramer assay.

The percentage of motile sperm was determined microscopically as described and a plus sign means that 100% spermatozoa were immobilized within 20 seconds of exposure to the surfactants.活动精子百分率按照前文所述方法经显微镜检测确定；其中加号代表：当精子暴露于表面活性剂（surfactants）时，可在20秒内使100%的精子完全被制动。