Fill in the Blank QuestionFill in the blank question.Any molecule that triggers an immune response is called a(n) .

What name is given to the chemicals on the pathogen that cause the immune response?

Specific immunity is ______ meaning that it is acquired after a(n) ______ event.

What is an antigen?Multiple choice question.any molecule that triggers an immune responsea molecule produced during an immune response

In a precipitation reaction, the antigen examined is a(n) molecule.

Fill in the Blank QuestionFill in the blank question.A chemical messenger produced by endocrine glands in one place in the body and acting on another is a(n) .