The little clump of cells looked almost like a human embryo. Created from stem cells, without eggs, sperm, or a womb, the ...

"I can't see a good reason to do that, but there are 8 billion people on this earth and some of them are crazy." ...

Sperm exhibit an immune response that is common to macrophages and neutrophils, according to Brazilian researchers.

Three RIKEN researchers have shed light on the cellular mechanisms underlying chromosomal abnormalities that can cause miscarriages and congenital disorders such as Down syndrome.

New research reveals why paternal mitochondrial DNA is banished during development, potentially paving the way for new ...

These abnormalities often arise when sex cells in humans—egg cells (oocytes) in women and sperm cells in men—don't divide properly and transfer too many or too few chromosomes to an embryo.

Understanding the role of your sperm and semen can be quite insightful, if you’re thinking about your overall health. Specific changes of your ejaculation in smell, taste, color, volume or ...

Celebrities do it (or wish they had), influencers won't stop talking about it, and clinics will all but tell you to do it now ...

Reprogrammed stem cells are being tested in at least 50 clinical trials around the globe, and the first approved therapy ...