The first step is realizing that you have a problem.
This step seems simple, but it's sometimes hard to admit. You can't help somebody that doesn't want to be helped.
Antigens are any molecules that elicit adaptive immune response. Antigens protrude from pathogens or other intruding substances. Antibodies are proteins found in blood plasma that attach to one particular kind of antigen and help to counter its effects.
Excluding themselves from an activity they normally love