The word "antigenic" means something that can trigger an immune response in our body, leading to the production of antibodies that help fight against it. Full definition
Our investigational Zika vaccine, mRNA - 1325, is being developed to deliver mRNA encoding for viral antigenic proteins associated with the Zika virus. (modernatx.com)
(It is because of antigenic drift that we need a new vaccine for flu each flu season. (marvistavet.com)
They weren't designed to eat corn, rice, eggs, etc., and so commercial cooked food results in antigenic stimulation, which results in intestinal inflammation. (allfelinehospital.com)