gastric secretion. Â© A Dictionary of Food and Nutrition 2005, originally published by Oxford University Press 2005. gastric secretion Gastric juice contains the enzymes chymosin (in infants) and lipase, the inactive precursor of pepsin (pepsinogen), intrinsic factor, mucin, and hydrochloric acid.
Bisphenol A (BPA) Overview & Updates. BPA (Bisphenol A) is a chemical used in certain food contact materials and first approved by FDA in the early 1960s. In recent years, concerns have been raised about BPA's safety. In August 2008, FDA released a draft report finding that BPA remains safe in food contact materials.
PSA is the abbreviation for prostate-specific antigen, a substance produced by the prostate cells. A PSA test measures the level of PSA in the bloodstream. Very little PSA escapes from a healthy prostate into the bloodstream, but certain prostate conditions can cause larger amounts of PSA to leak into the blood.