... sequence of strain AY691679, usingthe Primer 5.0 software. The sequences of the primers* Correspondence: yijianzhong@yahoo.comInstitute of Animal Husbandry Veterinary Sciences, Shanghai Academy of Agricultural ... analysis of old and new strains of porcine circovirusassociated with congenital tremors in pigs and their comparison withstrains involved with postweaning multisystemic wasting syndrome. CanJ ... paleness of the skin,dyspnea, and increased mortality rates [1,2 ], was firstdescribed in Canada in 1991, and is now widespreadthroughout swine p roduction areas of the world [3,4].The genome of...