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 is caviar consisting of the roe (or eggs) of the beluga sturgeon Huso huso.It is found primarily in the Caspian Sea, the worldâs largest salt-water lake, which is bordered by Iran and the CIS countries of Azerbaijan, Kazakhstan, Russia, and Turkmenistan.t can also be found in the Black Sea basin and occasionally in the Adriatic Sea. Beluga caviar is the most expensive type of caviar, with present market prices ranging from $7,000 to $10,000/kg ($3,200 to $4,500/lb).