Multiple Choice
What is currently the BEST explanation for what determines whether a T cell develops into a CD8+ T cell or a CD4+ T cell?
A) CD4/TCR coengagement suppresses CD8 expression, and CD8/TCR coengagement suppresses CD4 expression.
B) T cells randomly downregulate CD4 or CD8, and only cells that still bind the appropriate MHC will get a strong enough signal to survive.
C) CD4 or CD8 expression is determined by the strength and duration of the TCR/MHC interaction.
D) CD4 or CD8 expression is predestined in the bone marrow.
E) Only ?? T cells express CD8.
Correct Answer:
Verified
Correct Answer:
Verified
Q2: T cells selected on a b haplotype
Q3: Which item listed below is NOT likely
Q4: As a thymus-settling progenitor enters the thymus,
Q5: Compare and contrast the affinity hypothesis and
Q6: In negative selection, cells that receive _
Q7: At first glance, the logic of positive
Q8: Superantigens differ from regular peptide antigens because
Q9: Signaling through the pre-TCR results in<br>A)maturation to
Q10: Which of the following molecules would double-negative
Q11: In a brief statement, can you explain