Sperm sorting is an advanced method that types sperm "in vitro" by stream cytometry. This shines a laser on the sperm to tell apart X and Y chromosomes, and can immediately different the sperm out into unique samples. In the course of the early to mid 1980s, Dr. Glenn Spaulding https://eggfreezing32098.bloggerswise.com/38830167/artificial-insemination-no-further-a-mystery