MeSH note : XM1 is the most prominent inducible protein in myeloma cells synthesized at high rate
in resting B lymphocytes; not detectable in thymic or splenic T lymphocytes;
MeSH synonym : class II antigen associated glycoprotein p31; p31 class II antigen associated glycoprotein; HLA-DR associated protein, human; B-cell specific protein XM1, human; B-lymphocyte-specific high turnover protein, human;