1. Abeyounis, D. J., Milgrom, F., Witebsky, E.: cit. [8].
2. Altman, B.: Tissue transplantation: Circulating antibody in the homotransplantation of kidney and skin.Ann. Roy. Coll. Surg. Eng. 33, 79 (1963).
3. Amos, D. B.: The use of simplified systems sanaid and to the interpretation of mechanisms of graft rejection.Prog. Allerg. 6, 468 (1962).
4. Boss, J. H., Silber, E., Nelken, D.: Antibodies to species homologous tissue antigens in the rat. I. Naturally occurring circulating antibodies.Clin. Exp. Immun. 2, 191 (1967).
5. Boyden, St. v.: The adsorption of proteins on erythrocytes, treated with tannic acid and subsequent hemagglutination by antiprotein sera.J. exp. Med. 93, 107 (1951).