From Wikipedia, the free encyclopedia. An epitope, also known as antigenic determinant, is the part of an antigen that is recognized by the immune system, specifically by antibodies, B cells, or T cells. conformational epitope is composed of discontinuous sections of the antigen's amino acid sequence. These epitopes interact with the paratope based on the 3-D surface features and shape or tertiary structure of the antigen. The proportion of epitopes that are conformational is unknown.
Dear fortysomething: Yes, we do get questions about itchy nipples or burning nipples. The least common causes, but the most serious, would be inflammatory breast cancer or Paget's Disease (another type of breast cancer).
Non-pregnancy causes. If pregnancy has been ruled out, it's likely that your nipple discharge is caused by one of the following conditions: 1  duct papilloma â a harmless growth inside your breast duct (the tube that carries milk from the gland to the nipple) that typically causes bloodstained discharge from one breast.