Natural killer (NK) cell, illustration. NK cells are a type of white blood cell and a component of the immune system. They recognise certain proteins, or antigens, on virus-infected or tumour cells and destroy them. | |
Licence : | Libre de droits |
Crédit: | Science Photo Library / Gaertner, Juan |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : | - |