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PCR amplification of the hlyA gene in L. monocytogenes isolates.
M, 100 bp DNA size marker; lane 1, positive control L. monocytogenes ATCC (388 bp); Lane 2, negative control; lanes 3 to 7, isolates from water samples; lanes 8 to 10, isolates from vaginal swabs; and lanes 10 to 12, isolates from fecal samples.
