( 2 ) a deviation from the control curves without irregularities , quite different than these observed with piperacillin while using tazobactam at 1/8 mic , and ( 3 ) a deviation from the control curve for lower piperacillin values in piperacillin-tazobactam combinations ( 8:1-4:1 ) .
C0031955
piperacillin
C0250480
piperacillin