TABLE 2.

Gene combinations of RNP complexes in reassortant viruses between Prague (H7N7) and Yokohama (H3N2) virusesa

Combination no.RNP gene originFrequency (no. of reassortant viruses)
PB2PB1PANP
1YPPP7
2PYPP
3PPYP
4PPPY
5YYPP25
6YPYP
7YPPY1
8PYYP
9PYPY
10PPYY
11YYYP73
12YYPY1
13YPYY
14PYYY
15YYYY13
16PPPP
  • a Frequencies are based on the characterization of 120 plaque-purified viruses (see Table 1). P, Prague; Y, Yokohama. −, the RNP gene combination was not present among the plaque-purified viruses.