A method of identifying highly fecund males in which an isotonic, buffered liquid test specimen of semen is layered on top of a barrier medium that inhibits net movement (migration) of less mobile sperm into the barrier medium. Differences in mobility of populations of sperm among test subjects have...http://www.google.fr/patents/US5866354?utm_source=gb-gplus-shareBrevet US5866354 - Method for measuring mobility of sperm
