Quantitative basic residue requirements in the cleavage-activation site of the fusion glycoprotein as a determinant of virulence for Newcastle disease virus.
Glickman RL, Syddall RJ, Iorio RM, Sheehan JP, Bratt MA. Quantitative basic residue requirements in the cleavage-activation site of the fusion glycoprotein as a determinant of virulence for Newcastle disease virus. J Virol. 1988 Jan; 62(1):354-6.