<prompt> Example of heterophile antigen is ?Forssman antigenCryptococcus polysacchorideProtein A of staphylococcusAll of the above  <response>: Ans. is a i.e.,Forssman antigen Heterogenetic Heterophile specificitySame or closely related antigens occuring in different biological species, classes and kingdoms are known as heterogenetic or heterophile antigens. 