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Primary immunodeficiency. Primary immunodeficiencies are disorders in which part of the body's immune system is missing or does not function normally. [1] To be considered a primary immunodeficiency (PID), the immune deficiency must be inborn, not caused by secondary factors such as other disease, drug treatment, or environmental exposure to ...
Neural tube defects ( NTDs) are a group of birth defects in which an opening in the spine or cranium remains from early in human development. In the third week of pregnancy called gastrulation, specialized cells on the dorsal side of the embryo begin to change shape and form the neural tube. When the neural tube does not close completely, an ...
Cholecystokinin ( CCK or CCK-PZ; from Greek chole, "bile"; cysto, "sac"; kinin, "move"; hence, move the bile-sac ( gallbladder)) is a peptide hormone of the gastrointestinal system responsible for stimulating the digestion of fat and protein. Cholecystokinin, formerly called pancreozymin, is synthesized and secreted by enteroendocrine cells in ...
Iodine is an essential trace element in biological systems. It has the distinction of being the heaviest element commonly needed by living organisms as well as the second-heaviest known to be used by any form of life (only tungsten, a component of a few bacterial enzymes, has a higher atomic number and atomic weight ).
Phagocytosis (from Ancient Greek φαγεῖν (phagein) 'to eat' and κύτος (kytos) 'cell') is the process by which a cell uses its plasma membrane to engulf a large particle (≥ 0.5 μm), giving rise to an internal compartment called the phagosome. It is one type of endocytosis. A cell that performs phagocytosis is called a phagocyte.
PDB: 1GPL . In biochemistry, lipase ( / ˈlaɪpeɪs, ˈlaɪpeɪz / LY-payss, LY-payz) refers to a class of enzymes that catalyzes the hydrolysis of fats. Some lipases display broad substrate scope including esters of cholesterol, phospholipids, and of lipid-soluble vitamins [1] [2] and sphingomyelinases; [3] however, these are usually treated ...
Amenorrhea or amenorrhoea is the absence of a menstrual period in a female who has reached reproductive age. [1] Physiological states of amenorrhoea are seen, most commonly, during pregnancy and lactation ( breastfeeding ). [1] Outside the reproductive years, there is absence of menses during childhood and after menopause.
Diabetes insipidus. Diabetes insipidus ( DI) (arginine vasopressin disorder), alternately called arginine vasopressin deficiency (AVP-D) or arginine vasopressin resistance (AVP-R), [ 5] is a condition characterized by large amounts of dilute urine and increased thirst. [ 1] The amount of urine produced can be nearly 20 liters per day. [ 1]