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Genotyping of TNF-α-308G/A in blood sample. PCR product was digested by restriction enzyme and visualized in 3% agarose gel stained with ethidium bromide. Lane 1, 3, 5 show positive control; Lane 2, 4, 8, 9, 10, 12, 13, 14, 16 show G/G genotype; Lane 6, 7, 11 show G/A genotype; Lane 15 shows A/A; Lane 17 shows blank control; M shows 100 bp DNA standard marker.
