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Alpha and gamma heavy chain diseases in man: intracellular origin of the aberrant polypeptides.


 Immunofluorescent and in vitro labeling studies were carried out on cells obtained from patients with α and γ heavy chain diseases. No evidence of post-ribosomal intracellular degradation of a normal size heavy chain was found in either case. Intracellular polymerization of the aberrant peptides appeared to take place in a fashion similar to that seen in cells synthesizing intact heavy chains.