Multiple Choice
The antigen receptor on a T cell recognizes a degraded fragment of a protein (i.e., a peptide) bound to a specialized cell surface peptide-binding receptor called an MHC molecule. One key aspect of this system is that the peptides displayed on MHC molecules can be derived from intracellular proteins. This mode of antigen recognition is particularly important in allowing the adaptive immune response to detect infections by:
A) Large helminthic parasites in the gastrointestinal tract
B) Intracellular pathogens, such as viruses and some protozoa
C) Extracellular bacteria that colonize the lungs
D) Fungi that form hyphae in the bronchial airways
E) Fungal infections in the skin epithelium
Correct Answer:
Verified
Correct Answer:
Verified
Q9: T<sub>H</sub>1, T<sub>H</sub>2, T<sub>H</sub>17, and T follicular helper
Q10: Naive B and T lymphocytes are small,
Q11: For each of the panels A–D in
Q12: In the 1970s, immunologists discovered the genetic
Q13: A common characteristic of a site of
Q15: The clonal selection theory was first proposed
Q16: The effector activities important in eliminating infectious
Q17: Pathogenic organisms cause damage to the host
Q18: The immune system uses several types of
Q19: One major difference between the innate and