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. 2016 Sep 23;60(10):5957–5967. doi: 10.1128/AAC.00463-16

FIG 6.

FIG 6

Impact of subinhibitory concentrations of clindamycin on S. aureus clinical isolates. Biofilm mass quantification of MSSA clinical isolates CI-1 to CI-5 (A), clindamycin-sensitive MRSA clinical isolates CI-6 to CI-12 (B), and clindamycin-resistant MRSA clinical isolates CI-13 to CI-18 (C) with crystal violet in the absence and presence of subinhibitory concentrations of clindamycin (CLI) after 18 h of static incubation. Biofilm without clindamycin was set to 1, and fold changes are presented. Results are average data from at least three replicates ± standard error of the mean. *, highest tested clindamycin concentration, 0.03 μg/ml (MIC, 0.06 μg/ml); **, highest tested clindamycin concentration, 0.015 μg/ml (MIC, 0.03 μg/ml).