Natural killer cells
a. are a type of macrophage.
b. exhibit no memory response.
c. recognize cells infected by a specific virus.
d. are produced in the thymus.
e. all of these
Answer: b
Natural killer cells
a. are a type of macrophage.
b. exhibit no memory response.
c. recognize cells infected by a specific virus.
d. are produced in the thymus.
e. all of these
Answer: b