Which of the following is true of B cells?
A) They mature in the thymus and lymph nodes
B) They secrete antibodies
C) They activate T cells
D) All of the above
Answer: B
Which of the following is true of B cells?
A) They mature in the thymus and lymph nodes
B) They secrete antibodies
C) They activate T cells
D) All of the above
Answer: B