RT Journal Article SR Electronic T1 Proceedings: Differences in serum IgG structure in health and rheumatoid arthritis as studied by circular dichroic spectra. JF Annals of the Rheumatic Diseases JO Ann Rheum Dis FD BMJ Publishing Group Ltd and European League Against Rheumatism SP 108 DO 10.1136/ard.33.1.108-a VO 33 IS 1 A1 P Johnson A1 J Watkins YR 1974 UL http://ard.bmj.com/content/33/1/108.1.abstract AB