All are B cell marker except-
Reference :Robbins basic pathology 9th edition pg no 117:Some are the signaling molecules attached to the BCR; another example is CD21 (also known as the type 2 complement receptor, or CR2), which recognizes a complement break- down product that frequently is deposited on microbes and promotes B cell responses to microbial antigens. Inter- estingly, the ubiquitous Epstein-Barr virus has cleverly evolved to use CD21 as a receptor for binding to B cells and infecting them.
CD-15
CD-19
CD-21
CD-23
General pathology