Fig. 2From: A novel amino acid site of N protein could affect the PRRSV-2 replication by regulating the viral RNA transcriptionSequence analysis for the PRRSV-2Â N protein. Fifteen isolates were found in the National Center for Biotechnological Information (NCBI) database. The conserved serine sites (78, 93, 95, 99 and 105) and the non-conserved serine sites (36, 70, 77, 120 and 122) are shown in grey and redBack to article page