Conversation so far:
where is the thymus gland in a cow
Cows have more than one thymus, in their neck and by their heart.
what is the purpose of the thymus gland
Within the thymus, T cells mature. T cells are critical to the adaptive immune system, where the body adapts specifically to foreign invaders.
who discovered the thymus gland
The thymus was known to the ancient Greeks.
where is the thymus gland in humans
The thymus is located in the anterior superior mediastinum, in front of the heart and behind the sternum.

Question: does the gland change
Self-contained rewrite: does the thymus gland change