Overview. Boston Gear's spur gears, which are designed to transmit motion and power between parallel shafts, are the most economical gears in the power transmission industry.We offer both 14 1/2Â° and 20Â° PA (pressure angle), involute, and full-depth system gears. Transmits motion and power efficiently between parallel shafts. 2  Our 20Â° PA spur gear has a high load-carrying capacity for enhanced performance. 3  The 14 1/2Â° PA spur gear offers smooth, quiet operation. 4  Spur gears are manufactured in Delrin, non-metallic, brass, steel, and cast iron materials for maximum versatility.
ACTH is a segment of a much larger glycoprotein prohormone molecule called proopiomelanocortin (POMC). POMC is synthesized by the corticotrophs of the anterior pituitary, which constitute about 10 percent of the gland.
An increased ACTH result can mean that a person has Cushing disease, Addison disease, or ectopic ACTH-producing tumors. A decreased ACTH result can be due to an adrenal tumor, steroid medication, or hypopituitarism.