Plant Extracts - chemistry, Staphylococcus epidermidis - drug effects, Escherichia coli - drug effects, Humans, Pseudomonas aeruginosa - growth & development, Dermis - drug effects, Microbial Sensitivity Tests, Escherichia coli - growth & development, Dermis - cytology, Metal Nanoparticles - ultrastructure, Cell Survival - drug effects, Silver - pharmacology...