<prompt> Memory T cells can be identified by using the followingCD 45RACD45RBCD45RCCD45RO  <response>: Ref Harrison 17e p2021 CD45 lymphocyte common antigen is a receptor-linked protein tyrosine phosphatase that is expressed on all leucocytes, and which plays a crucial role in the function of these cells. ... These CD45-associated molecules may play an impoant role in regulatingCD45 tyrosine phosphatase activity and function. Present on memory T cells 