Scientists have sequenced the full genomes of 91 sperm from one man, the first complete sequencing of a human gamete cell. It demonstrates the vast genetic variation in one person, according to genetic researchers at Stanford.
An ultrasound zap to the testicles can stop the production of sperm, reducing overall sperm count to a level that would render males infertile, according to a new study involving rats. Further studies are still needed to test how long this new contraceptive method would last, and whether infertility could be reversed. But for the researchers studying rat and monkey testicles, the early results are pretty gratifying.
Men with type-1 diabetes might be able to grow new insulin cells from their own testicular tissue, according to a new study. Testicular treatment could even be safer and more effective than stem-cell therapies.
Research shows that mixed-gender porn stimulates sperm to swim faster than all-women porn.
By Siri SteinerPosted 08.04.2005 at 8:00 pm 0 Comments
Animals have developed some fascinating tactics to ensure that their genes survive to the next generation: impressive color displays, the best pheromone smell, sperm that induces the female to ovulate right after mating. And humans apparently aren’t above such biochemical shenanigans.