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Amplification of virulence genes (a, b) and biogenic amine genes (c) in SKI19 by PCR. Lanes 1, 4, 7, 10: products of positive controls; Lanes 2, 5, 8, 11: products of negative controls; Lanes 3, 6, 9, 12: the absence of target genes in SKI19. Lane M: 100 bp and 1 Kb DNA markers
