This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Other topics and Adverse effects, Subject name: Pharmacology
[{'content': 'The persistent suppression of bacterial growth that may occur after limited exposure to some antimicrobial drug is called: \nSelect and explain. \nA. Time dependent killing, B. Post antibiotic effect, C. Concentration dependent killing, D. Sequential blockade', 'role': 'user'}, {'content': 'Answer: B \nExplanation: (Ref: Katzung 10/e p756) Time dependent killing kinetics is shown by aminoglycosides. Here, the killing activity depends upon thelength of time, plasma concentration is above MIC. Concentration dependent killing is shown by b lactam drugs. here, killing activity depends upon the ratio of plasma concentration to MIC. Post antibiotic effect is the suppression of bacterial growth after limit exposure to antibiotic.', 'role': 'assistant'}]