Natural killer cell. Immunofluorescent light micrograph of human Natural Killer (NK) cells. The nucleus of each cell is blue,with the cytoplasm proteins stained green,yellow and red. Natural killer cells are a type of white blood cell known as T-lymphocytes. As part of the body's immune response mechanism,NK cells have the ability to destroy virus-infected cells & tumour cells. On contact with the surface of a tumour cell,the NK cell recognizes certain proteins called antigens,which activate its cell-killing mechanism. Immunofluorescence uses antibodies to attach fluorescent dyes to specific molecules within cells. Magnification: x624 at 6x4.5cm size | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Kedersha, Nancy |
Taille de l’image : | 4841 px × 3685 px |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : | - |