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NK-lymphocytes (CD56) in the blood
Medical expert of the article
Last reviewed: 05.07.2025
Normally, the number of CD56 lymphocytes in the blood of adults is 9-19%.
CD56 lymphocytes are effector cells of cellular immunity responsible for antiviral, antitumor and transplant immunity (see above CD16 lymphocytes). A decrease in the number of CD56 lymphocytes leads to the development of oncological diseases and aggravation of the course of viral infections.
Diseases and conditions that lead to changes in the number of CD56 lymphocytes in the blood
Increase in the indicator |
Decrease in the indicator |
Activation of anti-transplant immunity:
|
Oncological diseases Secondary immunodeficiency states. HIV infection Congenital defects of the immune system Severe viral infections Severe burns, injuries, stress Treatment with cytostatics, immunosuppressants, glucocorticosteroids Ionizing radiation |
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