Abstract
The characteristic electrophoretic pattern of myeloma globulins on paper or boundary electrophoresis has been attributed 1, 2 to the electrical homogeneity of this type of protein. Rarely, a myeloma globulin has been found to comprise two electrophoretic components3-8 and, in one instance’, evidence of three electrophoretic components has been obtained. However, molecular heterogeneity in myeloma globulins, apparently homogeneous on electrophoresis, has been demonstrated by ultracentrifugationlp 8, 9. It is thus of interest that electrophoresis of certain myeloma sera in starch gel has been found to resolve several abnormal components in each serum. Starch gels were prepared essentially according to the method described by SMITHIES’~, using potato starch (British Drug Houses) which had been hydrolysed
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