The colorful and fragile start to the life of a living reef
Video, Slideshows, Infographics
A lot changes in a child’s body over the course of development, and not all changes occur linearly: gene expression can fluctuate, and organs can perform different functions on the way to their final purpose in the body. Here are some of the key deve
The Pediatric Research Equity Act (PREA) of 2003 requires that companies developing new drugs that could be used to treat a condition in children perform clinical trials in kids before winning FDA approval. The Best Pharmaceuticals for Children Act (
Vitamin D has a variety of actions in the body. It binds to the vitamin D receptor (VDR), which then binds to the retinoid X receptor (RXR) and activates the expression of numerous genes. Through this mechanism, vitamin D promotes calcium absorption
Pierre Comizzoli, a reproductive physiologist at the Smithsonian Conservation Biology Institute, chats about his efforts to rescue endangered species from extinction using in vitro fertilization as well as novel gamete preservation techniques.
Normal pancreatic function depends on the precise flow of calcium within and into the acinar cells of the organ. When food is eaten, low concentrations of the pancreas-stimulating hormone cholecystokinin or of the neurotransmitter acetylcholine cause