Some Characteristics of Non-Immunoglobulin Components in Low pH Extracts of A Non-Lymphoid Tumor

In situ humoral immunity as an indispensable component of host-tumor relationship is being studied in our laboratory using various tumor systems (1–3). It is now well established that immunoglobulins localize in vivo within the tumor tissue of man and animals (3). Some of these tumor-associated Ig molecules may be anti tumor antibodies induced in tumor-bearers (e. g.2,4).