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.

Question: who discovered the gland
Self-contained rewrite: who discovered the thymus gland