Figure 7. . Minimum inhibitory concentration determination in light and dark.

(A) Initially we tested whether both demeclotetracycline and doxycycline could be activated with BL. Next a standard broth microdilution assay (16 h) was conducted with incubation either in dark or exposed to 0.5 J/cm² BL. Three examples are given. (B) Methicillin-resistant Staphylococcus aureus with doxycycline; (C) Escherichia coli (5-66 resistant) with demeclotetracycline; (D) E. coli (urinary tract infection 89) with MC.

BL: Blue light; DMCT: Demeclocycline; DOTC: Doxycycline; Ec: Escheria coli; MC: Minocycline.

Reproduced from [57].