These domains contain about 70–110 amino acids and are classified into different categories (for example, variable or IgV, and constant or IgC) according to their size and function.
Ove domene sadrže oko 70-110 aminokiselina i razvrstavaju se u različite kategorije (na primjer, varijabla ili IgV i konstanta ili IgC) prema veličini i funkciji.