Humans 2 Killer Cells, Natural 2 cell maturation 2 controlled study 2 cytokine response 2 gamma interferon 2 human 2 human cell 2 natural cytotoxicity triggering receptor 1 2 natural killer cell 2 perforin 2 protein expression 2 upregulation 2 Antibodies, Monoclonal 1 Antigens, CD 1 Antigens, CD56 1 Antigens, Differentiation, T-Lymphocyte 1 Article 1 CD158 antigen 1 CD16 antigen 1 CD3 antigen 1 CD56 antigen 1 CD57 antigen 1 CD69 antigen 1 CD94 antigen 1 Cell Differentiation 1 Cell Lineage 1 Cell Proliferation 1 Cell Survival 1 Coculture Techniques 1