Precursor CTLs are characterized by each of the following EXCEPT:
A. they do not divide.
B. they do not express high affinity for CD25.
C. they express CD4.
D. they lack cytotoxic activity.
E. they produce low amounts of IL-2.
Answer: C
Precursor CTLs are characterized by each of the following EXCEPT:
A. they do not divide.
B. they do not express high affinity for CD25.
C. they express CD4.
D. they lack cytotoxic activity.
E. they produce low amounts of IL-2.
Answer: C