1. Although at some research centers, ovarian tissue is being frozen for future egg development, no human pregnancies have been achieved with this approach, Cardonick said. 2. Gosden and his colleagues explored this idea by freezing strips of ovarian tissue donated by women undergoing medical treatments. 3. Her case was the first on record in which frozen ovarian tissue began to function again. 4. If she wants to become pregnant, doctors will have to stimulate the ovarian tissue again, retrieve eggs and perform in vitro fertilization. 5. In animals, Fugger said, reimplanted ovarian tissue hooks up to its blood supply. 6. In the latest experiment, the researchers removed ovarian tissue from African elephants and froze it. 7. Now, when her pelvis is irradiated, she will simply have to raise her arm over her head to keep the ovarian tissue out of the way. 8. Oktay reported this week that he had implanted previously frozen human ovarian tissue into mice and was able to get the ovaries to ripen and give off mature eggs. 9. One version of the approach he envisions involves giving a woman back some of her ovarian tissue if she has been somehow sterilized. 10. Roger Gosden is the most outspoken champion of transplanting ovarian tissue and has provided much of the experimental support for it. |