Аннотация:The complexes formation between immunoglobulins and immobilized on mica ligand has been studied by atomic-force microscopy in two different systems. The 60 kDa ligands possessing only one site for antibody's recognition were used in the first system. In other system the more complex interaction of human immunoglobulin with immobilized polyclonal antibodies were studied. In both systems the specific complexes with proper ligand were appeared and unspecific interaction wasn't detected. Developed method of immunocomplex revealing by image atomic-force microscopy planned be used in creation modern diagnostical system.