The lymphocyte markers that distinguish the various stages of B-cell differentiation are shown. Markers that are expressed on the cell surface are indicated as solid lines; markers that are predominantly cytoplasmic are shown as dotted lines. Note that some markers may move from the cytoplasm to the cell surface. Source: Antibody Deficiencies, The Online Metabolic and Molecular Bases of Inherited Disease Citation: Valle D, Beaudet AL, Vogelstein B, Kinzler KW, Antonarakis SE, Ballabio A, Gibson K, Mitchell G. The Online Metabolic and Molecular Bases of Inherited Disease; 2014 Available at: http://ommbid.mhmedical.com/DownloadImage.aspx?image=/data/books/971/ch184fg3.png&sec=62652905&BookID=971&ChapterSecID=62652864&imagename= Accessed: October 18, 2017 Copyright © 2017 McGraw-Hill Education. All rights reserved