Phylogenetic analyses of the putative M (ORF 6) and N (ORF 7) genes of porcine reproductive and respiratory syndrome virus (PRRSV): implication for the existence of two genotypes of PRRSV in the U.S.A. and Europe

Authors: Xiang‐Jin Meng, P. S. Paul, Patrick G. Halbur, Melissa A. Lum - Archives of Virology 1995 cited by 305