Synonyms that are in the dictionary are marked in green. Synonyms that are not in the dictionary are marked in red.
Antonyms that are in the dictionary are marked in green. Antonyms that are not in the dictionary are marked in red.
One of the main functions of the thymus is to help T cells learn how to tell friend from foe.
Source: https://gizmodo.com/heart-transplant-thymus-procedure-duke-university-1850085030