1. (Pharmacology) a drug, agent, or nerve that can cause dilatation (vasodilatation) of the walls of blood vessels. 2. (Physiology) a drug, agent, or nerve that can cause dilatation (vasodilatation) of the walls of blood vessels.
As part of their proposal to âreintroduceâ 750 Mexican wolves, these scientists want to have a self-sustaining population of 250 wolves in southern Utah and northern Arizona â places that fall well outside the predatorsâ historic range.
Present Status: The gray wolf is extirpated from the lower 48 states, with the exception of Minnesota (2,445 wolves); Wisconsin (323 wolves); Michigan (278 wolves); and Montana, Idaho, and Washington (total 664 wolves). However, there have been documented occurrences of gray wolves in North Dakota during the 1990's.