Improved flow cytometer system particularly adapted to use for sex-selected sperm sorting include enhanced sheath fluid and other strategies which minimize stress on the sperm cells, including a 2.9 percent sodium citrate sheath solution for bovine species and a HEPES bovine gamete media for equine species....http://www.google.com.au/patents/US7195920?utm_source=gb-gplus-sharePatent US7195920 - Collection systems for cytometer sorting of sperm
