1. Alexander, P., Delorme, E. J.: The use of irradiated immune lymphoid cells for immunotherapy of primary tumor in rats. In: Immunological Parameters of Host-Tumor Relationship, p. 239. New York: Academic Press 1971
2. Axén, R., Porath, J., Ernback, S.: Chemical coupling of peptides and proteins to polysaccharides by means of cyanogen halides. Nature 214, 1302 (1967)
3. Baldwin, R. W., Price, M. R., Robins, R. A.: Significance of serum factors modifying cellular immune responses to growing tumours. Br. J. Cancer 28 (Suppl. 1), 37 (1973)
4. Bast, R. C., Zbar, B., Borsos, T., Rapp, H. J.: BCG and cancer. N. Engl. J. Med. 290, 1413 (1974)
5. Berczi, I., Sabbadini, E., Sehon, A. H.: In vivo destruction of tumor cells by an indirect cell-mediated immune mechanism. Immunol. Commun. 1, 1 (1972)