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PCB 3233 Exam 2 (Latest 2026/ 2027 Update) Review| Questions & Answers |100% verified | Grade A

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PCB 3233 Exam 2 (Latest 2026/ 2027 Update) Review| Questions & Answers |100% verified | Grade A

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PCB 3233 Exam 2 (Latest 2026/ 2027
Update) Review| Questions &
Answers |100% verified | Grade A

What are two cells that use receptors to distinguish between self and non-self cells?

-Macrophages

-NK Cells




C3b is a ligand for

Macrophage CR1




CR3 & CR4

Recognize iC3b & other ligands including LPS




Lectins
Carbohydrates-binding proteins

ex: Mannose & glucose receptors




Scavenger Receptors

Prefer molecules that are negatively charged like nucleic acids, LPS.

, PCB 3233 Exam 2 (Latest 2026/ 2027
Update) Review| Questions &
Answers |100% verified | Grade A
Phagocytic Receptors

Bind directly to microbial surface components




What do surface receptors promote?

Phagocytosis




PRR's bind to

PAMPs on pathogens




Receptors that detect microbial products signal what?

-Macrophage activation

-Cytokine Secretion




Toll-Like Receptors (TLR)

-10 receptors

-Has specificities for several microbial products




TLR-4
-Senses LPS

, PCB 3233 Exam 2 (Latest 2026/ 2027
Update) Review| Questions &
Answers |100% verified | Grade A
-Found on macrophages




What can LPS cause?

Septic Shock




What is LPS known for being?
Endotoxin




What is local accumulation of fluid accompanied by?

Swelling, redness, heat, & pain




What does increased dilation cause?

Reduced blood flow




Complement receptors 3&4 (Mac-1, CD11b, CD8) target what?

Bacteria & Fungi




CD14 binds to what?

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