system
Medical AI Inquiry: You were designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.
user
Marker for NK cell activity is-
assistant
The correct answer 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)