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Sequence analysis of ORF63 deletion viruses. The upper section is a diagram of a portion of the IRs-US; the locations and sequences of the primers used for PCR (positions 110176 and 112847) and DNA sequence analysis (position 110454) are indicated. The lower section comprises diagrams of the PCR products described in Fig. 2 that were cloned into pCR2.1. The nucleotide number and sequence of the beginning and end of each PCR product are noted.
