Paterna Biosciences says it has determined the set of instructions needed to turn sperm-making stem cells into "normal, mature" sperm.

Researchers at Oregon Health & Science University (OHSU) recently reported a striking first: They created human eggs in the lab using skin cells and then fertilized those lab-derived eggs with human ...

Scientists are exploring ways to mimic the origins of human life without two fundamental components: sperm and egg. They are coaxing clusters of stem cells – programmable cells that can transform into ...