This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Pharmacology
Drug which inhibit protein synthesis are all of the following except: March 2007 
Select and explain. 
A. Tetracycline, B. Chloramphenicol, C. Erythromycin, D. None
D: None
Answer: D: None 
Explanation: Ans. d noneDrugs which act by inhibiting protein synthesis:Aminoglycosides (streptomycin, amikacin, tobramycin, neomycin, etc.),SpectinomycinChloramphenicolClindamycinTetracycline (and minocycline, doxycycline, etc.)Erythromycin (and azithromycin)Fusidic acidLinezolidPenicillin/beta-lactamase antibiotics act by interfering with the synthesis of bacterial cell wall.