Can Stem Cells Become Sperm Cells?

The face of infertility -- in literature, in the media, in advocacy groups -- is so predominantly female that many often forget about the other part of the equation. But more than a third of infertility cases, which affect 7.3 million people in the United States, can be attributed to the male partner, according to a 2002 National Survey of Family Growth from the Centers for Disease Control and Prevention. Now, new research may provide a glimmer of hope that infertile men may one day be able to...Full Story