Add Yahoo as a preferred source to see more of our stories on Google. Sperm have to wiggle vigorously to reach an egg, and that motion is key to a clever new fertility test. The technique, tested with ...

Scientists have developed a method to test for male infertility that doesn't require much more than a smartphone. By building an app and pairing with a custom-made 3D-printed case that can magnify ...

Ultrastructure expansion microscopy of murine male germ cells reveals the fine molecular structures of centrioles (shown in the enlarged image). DNA is stained in blue, and the chromosome axis in red.