an antibody is any substance capable of triggering an immune response true false
Antigens are large molecules, usually proteins, on the surface of cells, viruses, fungi, bacteria, and some non-living substances such as toxins, chemicals, and foreign particles.Any substance capable of triggering an immune response is called an antigen.kip to content. Antibodies, also called immunoglobulins, are large Y-shaped proteins which function to identify and help remove foreign antigens or targets such as viruses and bacteria.