Transplantable Immunoglobulin‐Secreting Tumours in Rats

Abstract

The purification and chemical characterization of three Bence‐Jones proteins and one light chain of an IgG myeloma protein of the rat strain LOU/Wsl are described. The amino acid composition of the four chains is very similar but not identical. Fingerprint analyses show a pattern of peptides common to all four proteins as well as unique features. The compositions of the common peptides are given. The data indicate that the four light chains are of the kappa type.