The humoral (antibody) response is defined as the interaction between antibodies and antigens. Antibodies are specific proteins released from a certain class of immune cells known as B lymphocytes, while antigens are defined as anything that elicits the generation of antibodies (<answer>"anti"body "gen"erators</answer>). Immunology rests on an understanding of the properties of these two biological entities and the cellular response to both.
The term "antigen" is rooted in what two words?
"anti"body "gen"erators