For 10 points, name this hormone, which results in more concentrated urine as it causes the kidneys to conserve water.
Two relatively uncommon ways to treat low levels of this hormone involve using demeclocyline or chloropropamide, although it's more common for patients to receive a similar 8-lysine hormone from pigs. The high level of the receptor for this hormone in the brains of male prairie voles compared to male meadow voles may explain why the former are monogamous. This nine amino acid chain, like oxytocin, is released into blood circulation through the posterior lobe and has a precursor synthesized in the hypothalamus. Nephrogenic diabetes insipidus arises when a certain organ doesn't respond to this hormone through its V2 receptors. For 10 points, name this hormone, which results in more concentrated urine as it causes the kidneys to conserve water.
Two relatively uncommon ways to treat low levels of this hormone involve using demeclocyline or chloropropamide, although it's more common for patients to receive a similar 8-lysine hormone from pigs.
ADH [or AVP or argipressin or antidiuretic hormone; accept Arginine vasopressin before "vasopressin"]