Abstract:A monoclonal anti-idiotyped antibody (IgG1k MAb 3B11D4) has been raised against the lambda-chain dimers isolated from the urine of a patient (DEP) with AL amyloidosis. This antibody binds a conformational idiotope present on the monoclonal DEP IgA, but does not recognize the reduced and alkylated lambda-chain monomers, nor the 15- to 17-kDa light chain fragments obtained from the amyloid fibrils, which have the same N-terminal sequence as the urinary light chains. The nonreactivity of this MAb with amyloid fib… Show more
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