... Cn b nh 2.2.1 C u trỳc virus PRRS PRRSV l m t virus ARN chu i ủn dng, virus ủ c x p vo b Nidovirales, h Arteriviridae, chi Arterivirus [15] Virus cú c u trỳc g n gi ng v i virus gõy viờm kh p ng ... EMCV, virus gi d i (PRV), Porcine cytomegalovirus, Porcine respiratory coronavirus v Porcine paramyxovirus [1] Cỏc nh nghiờn c u ủó phõn l p virus t ph i, gan, lỏch v huy t ho c d ch c th l n sinh ... Northern American genotype g m nh ng virus thu c dũng B c M m tiờu bi u l ch ng virus B c M ATCC - VR2332 H gen c a virus g m khung ủ c m g i lờn mó húa cho protein c a virus g m GP1, GP2, GP3, GP4,...