I would suggest the analogy that they mean as much to us as a single human sperm does to you.

Scientists moved a step closer to creating human sperm and eggs from stem cells in research that could end infertility problems.

The first detailed studies of ion channels in human sperm.

A. As you know, a human sperm needs to swim through the female reproductive tract for something like 15 minutes to get to the egg.

He proposes using a live mouse as a 'host' to make human sperm.

Were they human sperm, they would be out of luck.

For human sperm, the longest reported successful storage is 21 years.

She reiterated this view in late 1994, when speaking about the need for legislation to prevent the sale of human sperm and eggs.

On June 25, he injected a third chimpanzee with human sperm.

In the second study, human sperm were exposed for seven days to different herbal concentrations.