%0 Journal Article %K Adult %K Agammaglobulinemia %K Aged %K Arthritis, Rheumatoid %K Centrifugation, Density Gradient %K Chromatography %K Chromatography, Gel %K Epitopes %K Humans %K Immunodiffusion %K Immunoglobulin G %K Immunoglobulin M %K Immunoglobulins %K Immunologic Deficiency Syndromes %K leprosy %K Lupus Erythematosus, Systemic %K Middle Aged %K Multiple Myeloma %K Scleroderma, Systemic %K Waldenstrom Macroglobulinemia %K Gamma-Globulins %B International archives of allergy and applied immunology %D 1970 %G eng %N 6 %P 618-26 %R 10.1159/000230317 %T The occurrence of serum 7S IgM in diseases associated with immunoglobulin abnormalities. %V 38 %1 http://www.ncbi.nlm.nih.gov/pubmed/4192482?dopt=Abstract %8 1970