(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.
Collie Color: The two base colors in collies are sable and black & tan. Most of us know, that in collies, sable is dominant and tri-color recessive. A puppy inherits one color allele from each parent. An allele is an alternate form of a gene. Therefore, if a collie inherits a dominant sable allele from each parent, he/she is a pure for sable (homozygous for sable). On the other hand, if a recessive black & tan color allele is contributed by each parent, the collie will be a tri-color (homozygous for black & tan).