1. Abney, E. R., Cooper, M. D., Kearney, J. F., Lawton, A. R., Parkhouse, R. M. E.: Sequential expression of immunoglobulin on developing mouse B lymphocytes. A systemic survey which suggests a model for the generation of immunoglobulin isotype diversity. J. lmmunol. 120, 2041 (1978)
2. Adamson, J. W., Fialkow, P. J., Murphy, S., Prahl, J. F., Steinmann, L.: Polycythemia vera: Stem-cell and probable clonal origin of the disease. N. Eng. J. Med. 295, 913 (1976)
3. Askonas, B. A., North, J. R.: The life style of B cells-cellular proliferation and the invariancy of IgG. In: Cold Spring Harbor Symp. Quant. Biol. 41, 749 (1977)
4. Barandun, S., Morell, A., Skvaril, F., Oberdorfer, A.: Deficiency of K or L type immunoglobulins. Blood 47, 79 (1976)
5. Bernier, G. M., Gunderman, J. R., Ruymann, F. B.: Kappa chain deficiency. Blood 40, 795 (1972)