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. 2007 Dec 5;82(4):1787–1797. doi: 10.1128/JVI.01798-07

TABLE 2.

Copy numbers of viral RNA per CCID50 of EV71 mutants

EV71 strain No. of copies of viral genome (in 100 μl)a CCID50 (in 100 μl) No. of copies of viral genome/CCID50
BrCr-TR 3.3 × 109 3.1 × 106 1.1 × 103
Nagoya 3.4 × 109 1.8 × 107 1.9 × 102
Nagoya-2876A 2.0 × 1010 5.6 × 106 3.6 × 103
Nagoya-2876A-S1 1.7 × 1010 4.8 × 106 3.5 × 103
Nagoya-2876A-3′ 1.8 × 1010 2.4 × 106 7.5 × 103
Nagoya-2876A-S1-3′ 1.4 × 1010 2.4 × 106 5.8 × 103
a

Viral RNA was extracted from each virus solution (prepared as crude cell lysates of infected RD cells), and then the number of copies of viral RNA was determined using real-time PCR.