<prompt> All of the following are features of Monoclonal Gammopathy of Undetermined Significance MGUS, EXCEPT:M protein in serumBone marrow clonal plasma cells 10No evidence of other B cell proliferative disordersNo myeloma-related organ or tissue impairment  <response>: Bone marrow plasma cells are less than 10 in MGUS. Ref:Harrisons Principles of Internal Medicine, 18th Edition, Page 940 