Fig. 2. (A) The inhibition of prodigiosin production and the exoprotease activity of S. marcescens MTCC 97 using AgNPs-MK. Data are represented as average values and the error bars represent the SD. The percentage inhibition is shown on the secondary y-axis. * indicates p ≤ 0.05 with respect to the control. (B) The inhibition of the swarming motility of S. marcescens MTCC 97 by AgNPs-MK: (i) control; (ii) 0.5 μg ml⁻¹ AgNPs-MK; (iii) 4 μg ml⁻¹ AgNPs-MK; and (iv) 8 μg ml⁻¹ AgNPs-MK.