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Expression of the α-psm genes in S. epidermidis confers sensitivity to C. pseudodiphtheriticum-mediated bactericidal activity. S. epidermidis 1457 pTXΔ16 (empty vector) and S. epidermidis 1457 pTXΔpsmα1-4 were assayed for sensitivity to C. pseudodiphtheriticum-mediated bactericidal activity. Images of the ZOC were taken after 24 and 120 h of incubation at 28°C and are representative of three independent biological replicates. Bar, 10 mm.
