What is self antigen
Blood cells have abo and rh factor antigens on their cell surface.The term antigen originally referred to a substance that is an antibody generator.Antigens from outside the body of an individual.Antigens can be proteins, peptides (amino acid chains.When the result of an antigen test does not fit the clinical circumstances of the patient, a pcr test is recommended for confirmation of the antigen test result.
If you have symptoms or you are a contact, and you can't access a rapid antigen test, you should get a pcr test.The normal consequence of an adaptive immune response against a foreign antigen is the clearance of the antigen from the body.Even blood cells have cell surface receptors.
