Normal development of the immune response is due in part to hormones produced by the ________.
A) adrenal medulla
B) pancreas
C) thyroid gland
D) thymus gland
Answer: D
Normal development of the immune response is due in part to hormones produced by the ________.
A) adrenal medulla
B) pancreas
C) thyroid gland
D) thymus gland
Answer: D