Antigen and Antibody

Antigen noun - Any substance (as a toxin or enzyme) that stimulates an immune response in the body (especially the production of antibodies).

Antibody and antigen are semantically related in antitoxin topic. In some cases you can use "Antibody" instead a noun "Antigen".

Antibody noun - Any of a large variety of proteins normally present in the body or produced in response to an antigen which it neutralizes, thus producing an immune response.

Antigen and antibody are semantically related in antitoxin topic. You can use "Antigen" instead a noun "Antibody".