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.
Beluga Caviar. Beluga Caviar is the most expensive food item in the world, costing up to $5,000 per kilogram. Caviar is fish eggs and this brand comes from the Beluga Sturgeon fish, found mostly in the Caspian Sea. The eggs are the largest of the fish eggs used for caviar.Beluga generally ranges from purple to black, the palest being the most expensive.aviar is fish eggs and this brand comes from the Beluga Sturgeon fish, found mostly in the Caspian Sea. The eggs are the largest of the fish eggs used for caviar. Beluga generally ranges from purple to black, the palest being the most expensive.