TABLE 1.

RFLPs of ORF5 of PRRS virus that was plaque cloned from ATCC VR-2332, the North American prototype, during a long-term in vivo replication

PassageLineNo. of cloned virusesNo. of clones with the following RFLP patterna:
2-5-22-6-21-5-22-5-42-1-2
1A1515a
B1515
C1515
2A1515
B1596
C1515
3A1515
B15141
C1515
4A1515
B1515
C1515
5A1515
B1515
C1515
6A1515
B1515
C1515
7A1515
B1515
C1515
8B1515
C1515
9B1515
C1515
10B1515
C1515
11B1515
C1515
12B1515
C1515
13B1515
C1515
    Total495398611575
  • a The RFLP pattern of each virus clone was predicted from its nucleotide sequence.