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TaqExo analysis of types 1a, 1b, 2 and 3 5′-UTR HCV DNA fragments. (A) Alignment of DNA sequences corresponding to nucleotides –31 to –274 of the 5′-UTR of type 1a, 1b, 2 and 3 negative strand HCV RNAs (40). Major cleavage sites are indicated by arrows. (B) TaqExo cleavage products of type 1a, 1b, 2 and 3 DNAs shown in (A). M, size markers. The sizes of major cleavage products of type 1b DNA are indicated on the left.
