Chunk #6 — Online Methods — Reverse transcription PCR of the Abl gene
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Total RNA was extracted from peripheral blood using TRIzol reagent (Invitrogen). An initial RT-PCR step with nested PCR was used to amplify exons 4 to 9 (codons 199 to 507) of the Abl kinase domain, and bidirectional Sanger sequencing of the PCR product was performed, as previously described23.