Vasopressin (Antidiuretic Hormone). Vasopressin (arginine vasopressin, AVP; antidiuretic hormone, ADH) is a peptide hormone formed in the hypothalamus, then transported via axons to, and released from, the posterior pituitary into the blood. AVP has two principle sites of action: the kidney and blood vessels.
The Face That Launched 1,000 Awws. Like a tiny feline fashion model, this Persian kitten seems to know how to tilt her head just so. And wow, her eyes are stunning. It's no wonder that the Persian is one of the most popular cat breeds in the United States, according to the Cat Fanciers' Association.
Some cool cute cats images: Little Low-Light Monsters (D800 @ ISO 25,600) Image by Sean Molin Photography. Here we have two creatures that can see in the dark. Demetrius the cat, and the D800. Dark is an understatement. Weâre talking f/1.4, 85mm @ 1/30th sec, and ISO 25,600. Whatâs more impressive than the low-light handling is the fact the AF locked on with absolutely no problems.