function:Ligand for CD2. Might facilitate interaction between activated lymphocytes. Probably involved in regulating T-cell activation.,similarity:Contains 1 Ig-like C2-type (immunoglobulin-like) domain.,similarity:Contains 1 Ig-like V-type (immunoglobulin-like) domain.,
Cell membrane ; Lipid-anchor, GPI-anchor . Secreted .
Widely expressed on all hematopoietic cells.