CD4

https://doi.org/10.1351/goldbook.12973
Cell surface antigen belonging to the immunoglobulin (Ig) superfamily of molecules and a marker of T helper cells.
Note: As an adhesion molecule, it interacts with the non-polymorphic part of major histocompatibility complex (MHC) class II gene product.
Source:
PAC, 2012, 84, 1113. (IUPAC glossary of terms used in immunotoxicology (IUPAC Recommendations 2012)) on page 1138 [Terms] [Paper]