NBDE Review Questions: Quiz 12 August 18, 2015 by Hassan Shah Leave a Comment All of the following can be found in the cell wall of a gram-negative bacterium except one. Which one is the exception? A. Endotoxin. B. A thin peptidoglycan layer. C. Lipopolysaccharide. D. Teichoic acid. E. O antigen. Δ
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