Look up: NK cell

1. NK cell
   NK cell: See Natural killer cell.
   Found on http://www.medterms.com/script/main/art.
   
   
2. NK cell
   <haematology, immunology> A type of lymphocyte that attacks and destroys foreign, infected and cancerous cells. Natural killer cells are not targeted at specific antigens the way cytotoxic T lymphocytes are. ... (14 Oct 1997) ...
   Found on http://www.mondofacto.com/facts/dictiona
   
   
3. NK cell
   a specialized type of lymphocyte capable of recognizing and destroying cancer cells and virus-infected cells. NK cells are important in natural resistance to tumors; when they are exposed to interleukin-2, they are activated and become even more effective in killing tumor cells. Called also natural killer cell.
   Found on http://www.encyclo.co.uk/local/21001
   
   
4. NK cell
   Naturally occurring, large, granular, lymphocyte-like killer cells that kill various tumour cells; they may play a role in resistance to tumours. Also, they participate in ADCC. They do not exhibit antigenic specificity, and their number does not increase by immunization.
   Found on http://www.microbiologybytes.com/iandi/I
   
   
5. Nk Cell
   A NK cell (natural killer cell) is a non-specific lymphocyte. NK cells, like killer T cells, attack and kill cancer cells and cells infected by microorganisms. NK cells are 'natural' killers because they do not need to recognize a specific antigen in order to attack and kill.
   Found on http://www.probertencyclopaedia.com/brow
   
   
6. NK cell
   A type of immune cell that has granules (small particles) with enzymes that can kill tumor cells or cells infected with a virus. An NK cell is a type of white blood cell. Also called natural killer cell and NK-LGL.
   Found on http://www.cancer.gov/dictionary?expand=