Fig. 3

A Relatively antibacterial efficiency of different nanocomposite membrane, and B fluorescence micrographs of S. aureus and E. coli stained by PI & calcein after treatment with CS (a), CS-Arg (b), ly-GO/CS-Arg (c) and ly-PDA@GO/CS-Arg (d), Scale bar lengths are 100 μm, P < 0.05, n = 3