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.
How many gray wolves are in the United States? Biologists believe that more than 5,500 gray wolves remain in the lower 48 states. Currently, populations exist in Alaska, Montana, Wyoming, Idaho, Minnesota, Wisconsin and Michigan. According to Defenders of Wildlife, Alaska's wolf population is estimated to be between 7,000 and 12,000.