5 words in this vocabulary list
noun a substance that is recognized by the immune system and triggers an immune response
noun a rapid and excessive growth of something, especially plants
noun small, saclike structures that are part of a gland and are responsible for secreting various substances
adjective relating to or resembling both acini and tubules
noun a noun is a word that represents a person, place, thing, or idea. In this case, 'aden ulcer' is a noun phrase that represents a type of ulcer located in the adenoids or glands in the body.