_:vb50941891 . _:vb50941891 . _:vb50941891 "url:https://doi.org/10.1016/j.clml.2020.06.017"^^ . _:vb50941891 . _:vb50941891 . _:vb50941891 "An amyloidosis that is characterized by the aggregation and deposition of amyloid fibrils composed of monoclonal immunoglobulin heavy-chain fragments, usually produced by a plasma cell neoplasm."^^ .