Exposing fertilized eggs in women to nitric oxide could help women in their 30s and 40s to remain fertile longer, according to a study at the Wayne State University School of Medicine. "Eggs from older women may be particularly sensitive to aging after they are released from the ovaries," said Husam Abu-Soud, researcher and co-author of a report in the science portal Eurek Alert and the American Chemical Society journal Biochemistry. But exposing the eggs to appropriate levels of nitric oxide "could extend this fertilizable time window in both old and young women," he speculates. Scientist Anuradha Goud and other colleagues at WSU also were part of the research team, the article points out. The report was carried by several Web newsletters originating in India .