Fig. 4From: A review on biosynthesis of silver nanoparticles and their biocidal propertiesSEM images of the bacterial strains. a Staphylococcus epidermidis, Gram-positive, b Pseudomonas aeruginosa, Gram-negative, c S. epidermidis treated with 100-6 h silver nanoparticles (0.04 mg/mL), d P. aeruginosa treated with 100–6 h silver nanoparticles (0.04 mg/mL) [36]Back to article page