Proliferation and hyperactivation of B-lymphocytes in the salivary glands is a feature primary Sj ц gren's syndrome (pSS). Detection saliva proteins synthesized by may be important diagnosis this disease. Objective: to evaluate diagnostic value measuring concentration immunoglobulin free light chains (FLC) patients with pSS. Material methods. The cross-sectional study included 24 pSS over age 1...

I previously reported the occurrence of a pattern of multiple, equally spaced, low-concentration light chain bands in urine in immunofixation electrophoresis (IFE) studies (Clin Chem 1990;36:1526-7). Although the pattern varies somewhat among patients with regard to the number of bands, light chain type, and concentration, it is relatively invariant with regard to the location and spacing of th...