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A two-serine insertion at position 69 (i69SS) of human immunodeficiency virus type 1 (HIV-1) reverse transcriptase (RT) appears to be critical to enhance multi-nucleoside RT inhibitor resistance(More)
Human immunodeficiency virus type 1 isolates having dipeptide insertions in the fingers subdomain of the reverse transcriptase (RT) show high level resistance to 3 '-azido-3 '-deoxythymidine (AZT)(More)