Many Cells of the Immune System Have Receptors That Detect

Multiple Choice

Many cells of the immune system have receptors that detect peptidoglycans and lipopolysaccharides.How do pathogenic bacteria avoid detection?

A) Pathogenic bacteria lack cell walls.
B) Pathogens often encase themselves in a gelatinous capsule.
C) Peptidoglycans are absent from pathogenic bacteria.
D) Disease is only possible if the immune system has been compromised by some other event.