Fig. 7. (a) Artistic representation showing the internal structure of Gram-negative and Gram-positive bacteria. Colony counting assay of (b) MDR-EC and (c) MRSA for 8 h in the presence of different concentrations of Bi2O3 NFs. All values represent the mean ± standard deviation. *p < 0.05, **p < 0.01 (compared to controls).
