The terms immunogen and antigen were not distinguished until 1959
An immunogen is any substance that generates B-cell (humoral/antibody) and/or T-cell (cellular) adaptive immune responses upon exposure to a host organism.[1][2] Imm
Hapten
In immunology, haptens are small molecules that elicit an immune response only when attached to a large carrier such as a protein;
Allergolical (or allergological) syndrome that can show itself clinically with expressions of both respiratory allergy and alimentary allergy
Tabar AI, Acero S, Arregui C, Urdánoz M, Quirce S. Asma y alergia por el colorante carmín [Asthma and allergy due to carmine dye]. An Sist Sanit Navar. 2003;26 Suppl 2:65-73. Spa