THE possibility of men - and women - growing their own sperm in the laboratory has moved a step closer, as scientists have converted human bone marrow tissue into immature sperm cells for the first time. The research is aimed at overcoming infertility in men but may eventually allow two women to have their own biological daughter. A team led by Karim Nayernia, of the University of Newcastle upon Tyne in Britain, took bone marrow from male volunteers and isolated adult stem cells called mesenchymal stem cells, which can turn into a variety of tissues including muscles. The researchers grew them in a culture containing vitamin A and coaxed them into becoming immature sperm cells known as spermatogonial stem cells. "Our next goal is to see if we can get the spermatogonial stem cells to progress to mature sperm in the laboratory," Professor Nayernia said in a statement. "We're very excited about this discovery, particularly as our earlier work in mice suggests that we could develop this work even further." Last year his team succeeded in converting embryonic stem cells from mice into sperm that were used to produce seven mice pups, six of which lived into adulthood. Professor Nayernia, who carried out both studies while at the University of Gottingen in Germany, said he expected it would take another three to five years of experiments to obtain fully developed human sperm. He said he hoped the research, published in the journal Reproduction: Gamete Biology, would lead to new infertility treatments, particularly for young men made sterile by cancer therapy. It might also be possible for women to produce sperm this way, he told reporters in Britain. An Australian researcher, Orly Lacham-Kaplan, said that if the findings were confirmed it was a fascinating development. "It's the start of something that is going to be really incredible, but there is a huge amount of work to be done," Dr Lacham-Kaplan said. But she said it was not known yet if human sperm could be matured in the lab and, if so, whether it would be healthy and able to fertilise an egg. She said that although Professor Nayernia's research did not involve embryos or embryonic stem cells, it was bound to be controversial. "Anything to do with human reproduction raises ethical issues," she said. http://www.smh.com.au/news/world/women-may-make-their-own-sperm/2007/04/13/1175971356289.html
These women would be guaranteed to never have sons as neither woman could donate a Y chromosome. That's ok, I'm sure the last thing 2 lesbian moms want to do is clean up after their teenage son's wet dreams anyhow. I'm sure stuff like that is why they got out of the business in the first place.
Dude. Lesbian rates are going to skyrocket. With the need for a penis gone... why would any girl ever want a guy?
whaaaaaaat, who the fuck came up wi th the idea of turning bone into spermcells, like how the fuck would u ever even link those 2 together, n fuck bein able to allow 2 women to have a baby, theres to many gay/lesbians n like it'd be even more added onto the population, although the extreme outnumbering of girls would be key, but they'd all probably be gay