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Stability of the multiplex PCR for L. monocytogenes serotype 4h. (A–C): serotype 4h L. monocytogenes were mixed with S. Enteritidis (A), E. coli (B), and two bacteria co-cultures (C). Lanes 1–4: bacteria suspension of serotype 4h mixing with other bacteria in ratios of 1:1, 1:10, 1:103, and 1:105; Lane M: DL2000 DNA ladder.
