Inbreeding in endangered species such as the cheetah and Florida panther leads to reduced sperm quality, say Australian researchers. The findings, which appear in a recent edition of the Royal Society ...

The behavior of sperm cells is due, in part, to the individual DNA make-up of these cells, rather than only to the genetics of males, finds a team of scientists. Its results, which provide a new ...

The behavior of sperm cells is due, in part, to the individual DNA make-up of these cells, rather than only to the genetics of males. The results, which provide a new understanding of the competition ...

(CNN) -- Scientists have long questioned whether human papillomavirus, or HPV, infections in men could affect their sperm health and fertility. Now, an early study finds that high-risk HPV infections ...

Different cell types—say, heart, liver, blood, and sperm cells—possess characteristics that help them carry out their unique jobs in the body. In general, those characteristics are hard-wired. Without ...

CHICAGO (Reuters) - U.S. researchers have found a way to coax human embryonic stem cells to turn into the types of cells that make eggs and sperm, shedding light on a stage of early human development ...

July 10, 2006 — -- The BBC is reporting that scientists in Germany have not only grown sperm from the embryonic stems cells of mice, but that the sperm was capable of producing offspring. While ...