Ergocalciferol is vitamin D2. Vitamin D is important for the absorption of calcium from the stomach and for the functioning of calcium in the body. Ergocalciferol is used to treat hypoparathyroidism (decreased functioning of the parathyroid glands).
LOT - Limit of Technology [Internet]; August 7, 2016 [cited 2016 AUG 7]. Available from: https://www.allacronyms.com/LOT/Limit_of_Technology.
Group Technology (GT) tames this variety beast. Group Technology examines products, parts and assemblies. It then groups similar items to simplify design, manufacturing, purchasing and other business processes. The figures below illustrate how an apparently random collection of items has surprising similarity.