Fig. 1
From: Ursolic acid inhibits colistin efflux and curtails colistin resistant Enterobacteriaceae
Time kill curve: UR potentiates the effect of colistin and causes growth reversal in resistant isolates of a E. coli U3790, b K. pneumoniae BC936. The culture was treated with colistin (Col—filled square) alone and colistin with ursolic acid (filled triangle). The samples were withdrawn at time intervals from 0, 1, 2, 3, 4 and 24 h and plated on to LB agar plates. The error bar represents the standard error of mean of three independent samples