Leukocytes recognize molecules that are unique to pathogens; thus, the molecules are
A) pathogen-associated molecular patterns.
B) pattern recognition receptors.
C) toll-like receptors.
D) phagosomes.
E) antigens.

Question

Quizplus · Accepted Answer

Pathogen-associated molecular patterns (PAMPs) are molecules that are unique to pathogens, such as bacterial cell walls or viral nucleic acids, and are recognized by leukocytes through pattern recognition receptors (PRRs), which include toll-like receptors (TLRs). This recognition initiates an immune response to eliminate the pathogen. Antigens, while also recognized by leukocytes, may be unique to the pathogen or may also be present in the host's own cells. Phagosomes are organelles within cells that engulf and digest pathogens.

Leukocytes Recognize Molecules That Are Unique to Pathogens; Thus, the Molecules