3ALDOUS E W,ALEXANDER D J. Detection and differentiation of Newcasde disease virus (avian paramyxovirus type 1 )[J].Avain Pathlol, 2001,30(2) : 117-1281.
4PANDA R,HUANG Z H,ELANKUMARAN S ,et al. Role of fusion protein cleavage site in the virulence of Newcastle disease viruse [J]. Microbial Pathogenesis, 2004 (36) : 1 - 101.
5PEETERS B P,DE LEEUW O S,KOCH G, et al. Rescue of Newcastle disease virus from cloned cDNA:evidence that cleavability of the fusion protein is a major determinant for virulence[J]. J Virol, 1999,73 (6) : 5001 - 5009.
