1. Abrahamson, N., C. A. Alper, P. J. Lachmann, F. S. Rosen and J. H. Jandel, Deficiency of C3 inactivator in man. J. Immunol. 107, 19 (1971).
2. Alper, C. A, F. S. Rosen and P. J. Lachmann, Inactivator of the third component of complement as an inhibitor in the properdin pathway. Proc. Nat. Acad. Sci. USA 69, 2910 (1972).
3. Axelsson, U. and A. B. Laurelly A case of angioneurotic oedema with a high content of non-functioning, double peaked Cl esterase inhibitor. Clin. exp. Immunol. 8, 511 (1971).
4. Becker, E.L., The relation of complement to other systems. Proc. Roy. Soc. B. 173, 383 (1969).
5. Donaldsony V. H. and J. Pensky, Some observations on the phylogeny of serum inhibitor of Cl esterase. J. Immunol. 104, 1388 (1970).