The conventional wisdom is that women are born with a certain number of eggs. But a new study adds to mounting evidence suggesting that may not be the case. Scientists transplanted precursor egg cells into sterilized mice, which then had offspring. More research is needed, but evidence is mounting that old ovaries can produce new eggs, researchers say. The work might eventually lead to improved fertility treatments.
In our new Etc. format, LiveScience provides links to articles of interest around the web. It is in Beta.