Marker for NK cell activity is-
T cell markers are unidigits (Eg: CD3) B cell markers are double digits (Eg: CD20) Natural Killer (NK) cell- 10-15% of peripheral blood lymphocyte Larger than small lymphocyte and contain azurophilic granules Large granular lymphocyte First line of defence against tumour cells, viral infected cells CD16 and CD56 positive Secretes gamma Interferon Antibody Dependent Cell mediated Cytotoxicity (ADCC)
CD3
CD4
CD56
CDI9
Immune system