cell myeloma patient (IMAGE) University of Würzburg Caption In healthy people, no more than every twentieth cell in the bone marrow should be a plasma cell. In this bone marrow smear of a myeloma patient, significantly more purple plasma cells can be seen. Credit UKW Usage Restrictions no further restrictions License Original content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.