blood protein measurement blood beta-2 microglobulin 2019-02-15T11:20:03Z CMO:0003039 EFO:0005197 EFO:0020180 The amount of beta-2 microglobulin (B2m) in a specified volume of blood. B2m is found in association with the major histocompatibility complex (MHC) class I heavy chain on the surface of most cells and has a predominantly beta-pleated sheet structure that can form amyloid fibrils in some pathological conditions. beta-2 microglobulin measurement beta-2-microglobulin measurement clinical_measurement_ontology sjwang