4 words in this vocabulary list
noun a microorganism, especially one that causes disease
verb not applicable
adjective not applicable
adverb not applicable
pronoun not applicable
preposition not applicable
conjunction not applicable
interjection not applicable
article not applicable
noun a method of protecting a person or animal against a disease by introducing a vaccine into the body to stimulate the immune system
noun any watery animal fluid
noun a system of blood typing that categorizes blood into four main groups - A, B, AB, and O