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.
Caviar harvested from an older fish is the more rare, and more sought after, white caviar. The Beluga sturgeon are primarily found in the Caspian Sea, which is surrounded by Iran, Azerbaijan, Russia, Kazakhstan and Turkmenistan. The other primary source of Beluga sturgeon is the Black Sea near Russia and Romania.
Caviar, an expensive delicacy that is known worldwide, is made by sieving and salting large fish roe. This dish has a grainy texture and it is usually served as an appetizer, garnish or spread. It is extremely perishable and must be refrigerated at once after getting the eggs from the fish.