Abstract
An immunological study of the humoral antibody, immuneglobulin and com plement, immunocapacity of 180 cases of primary lung cancer was made. In many of them, the immuneglobulin IgG IgA complement titer (CHSO) and component C4 values were high. Using the fluorescein antibody technique, the localization of immuneglobulin IgG and complement components C4 C3 is seen in lung cancer tissue. This perhaps indicates the resistence of the host to cancer. This study shows that the functional ability of humoral antibody is well preserved even in the end stage and that thus humoral antibody play an extremely important part in cancer immunology.
