(1) A nonspecific term for any condition that affects multiple arteries. (2) Polyarteritis nodosa, see there. (pol'Ä-ahr'tÄr-Ä«'tis) Simultaneous inflammation of a number of arteries. inflammatory and degenerative lesions of the arterial walls in a number of isolated locations.
The Border Collie comes in two coat varieties: rough or smooth. Both varieties are double coat and weather resistant and are close fitting and thick. The outer coat is either wavy or straight and coarse in texture. The under coat is dense, short, and soft. The rough coat variety has fur of medium length.
Today the Border Collie is recognized as the premier sheepherding dog. The breed's superior herding ability leads many fanciers to advocate breeding Border Collies only to working, not conformation, standards. The Border Collie was recognized by the American Kennel Club on October 1, 1995.