A foreign substance that triggers an immune response is classified as which of the following?

Question

Quizplus · Accepted Answer

An antigen is a foreign substance that triggers an immune response, such as by stimulating the production of antibodies. Antibodies (A) are proteins produced by the immune system in response to antigens. Lymphocytes (C) are a type of white blood cell that play a key role in the immune response. Immunoglobulin (D) is another term for antibody. Basophil (E) is a type of white blood cell involved in allergic reactions.

A Foreign Substance That Triggers an Immune Response Is Classified