Figure 4From: Dynamic changes of microbial flora and therapeutic consequences in persistent peritonitis Proportions of multidrug-resistant (MDR) bacteria cultured from peritoneal samples expressed as proportions among their respective species during initial surgery (S0) and at the time of reoperation (R1, R2 and R3). (A) Gram-positive bacteria. (B) Gram-negative bacteria. *P <0.05, †P <0.01 versus S0.Back to article page