(RNS) — Scientists have created a human embryo without the use of sperm or an egg — a true test-tube baby. Such embryos cannot (yet) develop into full-grown human beings. Even if transplanted into a ...

Human reproduction requires both male and female gametes. Gametes are special sex cells that contain the genetic information necessary to create a new life. Men produce millions of gametes called ...

FILE - In this Aug. 14, 2013, file photo, an in vitro fertilization embryologist works on a petri dish at a fertility clinic in London. Tens of thousands of people undergo in vitro fertilization every ...

For a long time, having children has been a young person’s game. Although ancient records are sparse, researchers estimate that, for most of human history, women most typically conceived their first ...

Scientists have detected microplastics — the tiny and pervasive fragments now found in our seas, drinking water, food and, increasingly, living tissue — in human semen and follicular fluid, according ...

Every schoolchild learns that vitamin D is essential for proper bone development. Deficiency leads to rickets, a classical childhood affliction with soft, deformed bones resulting in bowed legs. The ...

Overall Count and Share for 'WHO Collaborating Centre for Research and Research Training in Human Reproduction' based on the 12-month time frame mentioned above. Note: Articles may be assigned to more ...

Scientists have identified microplastics in over two-thirds of ovarian follicular fluid and more than half of semen samples, suggesting widespread internal exposure. The findings spotlight a growing ...