автор: Saul F. Castaneda

A xenobiotic is a chemical which is found in an organism but which is not normally produced or expected to be present in it. Specifically, drugs such as antibiotics are xenobiotics in humans because …

Trophoblasts (from Greek trephein: to feed, and blastos: germinator) constitute a particular population of cells forming the outer layer of the blastocyst, providing the embryo with nutrients and giv …