Fig. 6. Representative micrographs obtained using light microscopy of biofilms showing the effects of AgNPs-MK at the respective highest sub-MICs: (A-i) control C. violaceum 12472; (A-ii) C. violaceum 12472 treated with 4 μg ml⁻¹ AgNPs-MK; (B-i) control P. aeruginosa PAO1; (B-ii) P. aeruginosa PAO1 treated with 8 μg ml⁻¹ AgNPs-MK; (C-i) control S. marcescens MTCC 97; and (C-ii) S. marcescens MTCC 97 treated with 8 μg ml⁻¹ AgNPs-MK.