NK-lymphocytes (CD56) in the blood

Normally, the number of CD56-lymphocytes in the blood in adults is 9-19%.

CD56-lymphocytes are cell-effectors of cellular immunity, responsible for antiviral, antitumor and transplantation immunity (see above CD16-lymphocytes). Reducing the number of CD56-lymphocytes leads to the development of cancer and weighting of the course of viral infections.

Diseases and conditions leading to changes in the number of CD56-lymphocytes in the blood

Increase in the	Decrease in the indicator
Activation of antigraft implantation immunity: crisis of rejection of donor organs in recipients; amplification of antibody-dependent cell-mediated cytotoxicity	Oncological diseases Secondary immunodeficiency states. HIV infection Congenital defects of the immune system Severe viral infections Heavy burns, injuries, stress Treatment with cytostatics, immunosuppressants, glucocorticosteroids Ionizing radiation