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Schematic view of the katG gene fragment targeted by MAS-PCR assay using three primers (katg0F, katg5R, and katg4R [boldface arrows]). Short arrows indicate primers; long double-headed arrows depict the indicated PCR fragments. The katG codon 315 AGC is in the shaded box. The katg1F and katg4R primers are used in the PCR-RFLP assay.
