Definition. noun, plural: cell organelles. A membrane-bound compartment or structure in a cell that performs a special function. Supplement. A eukaryotic cell contains many organelles, for example, the nucleus, endoplasmic reticulum, golgi apparatus, mitochondria, and chloroplast (plastid).
Glucagon-like peptide-1 (GLP-1) is a neuropeptide and an incretin derived from the transcription product of the proglucagon gene.he known peripheral functions of GLP-1 include: 1  increases insulin secretion from the pancreas in a glucose-dependent manner. 2  increases insulin-sensitivity in both alpha cells and beta cells. 3  increases beta cells mass and insulin expression, PTM, and secretion.
What It Is. A gamma-glutamyl transpeptidase (GGT) test measures the levels of this enzyme in the blood. GGT is produced in many body tissues, with particularly high concentrations in the liver and gallbladder. The liver stores fuel from food, makes proteins, helps remove poisons and toxins, and produces bile, a digestive fluid that helps the body absorb fat. The gallbladder stores bile until it's needed.