Fig. 5

a Images of buffer as control, 3Cys-ΔC and 3Cys-ΔC-Au NCs treated HepG2 cells. Fluorescent and bright-field merged images were made by confocal microscopy. b Survival rate of cells treated with control buffer, 3Cys-ΔC and 3Cys-ΔC-Au NCs at differential concentrations. c Images of E. coli alone, complex of 3Cys-ΔC and E. coli, and complex of 3Cys-ΔC-Au NCs and E. coli in C. elegans. Fluorescent and bright-field merged images were made by confocal microscopy. d Survival rate of worms treated with control E. coli, 3Cys-ΔC and 3Cys-ΔC-Au NCs at differential concentrations