Which of the following is exposed on the outer surface of a gram-negative bacterium?
A. O-antigen of lipopolysaccharide (LPS)
B. Polysaccharide portion of lipoteichoic acid (LTA)
C. Braun lipoprotein
D. Electron transport system components
Answer:A
Which of the following is exposed on the outer surface of a gram-negative bacterium?
A. O-antigen of lipopolysaccharide (LPS) B. Polysaccharide portion of lipoteichoic acid (LTA) C. Braun lipoprotein D. Electron transport system components