cDNA clones of Japanese hepatitis C virus genomes derived from a single patient show sequence heterogeneity

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Abstract
Twelve cDNA clones of Japanese hepatitis C virus (HCV) have been isolated from liver tissue of a single non-A, non-B hepatitis patient. These clones represented the non-structural domains of HCV. The degree of substitution in the nucleotide sequences and deduced amino acid sequences between these clones was 9·5 and 7·7%, respectively. This high level of substitution suggested that repeated infections of different HCVs may have occurred in the patient.

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