Marker name | Cell type | Comment |
CD3 | T cells | Expressed on all T cells and no other cell type |
CD4 | T cell subset | Predominantly helper/inducer T cells |
CD8 | T cell subset | Predominantly cytotoxic T cells; expressed by up to one-third of NK cells |
CD19 or CD20 | B cells | |
CD16 | NK cells | Some NK cells may not express CD16 |
CD56 | NK cells | Expressed on the majority of NK cells |
CD57 | NK cells | Expressed on the majority of NK cells; combinations of CD16, CD56, and CD57 will more reliably evaluate NK cell number than any marker alone |
CD45RA | Naïve T cells | |
CD45RO | Memory T cells |
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