Brief Report: Two Bence Jones Proteins of Different Immunologic Types in the Same Patient with Multiple Myeloma

Abstract
In summary, two Bence Jones proteins, one of type K and the other of type L immunologic specificity, and a serum myeloma protein of type L were demonstrated in the same patient with multiple myeloma. It is probable that, in this instance, dissemination from at least two clones of plasma cells has occurred.