Lymphocyte attacking a cell infected by a virus (upper right). Lymphocytes (white blood cells) are a component of the immune system. The lymphocyte attaches itself to the target cell and proteins called perforin pierce the cell membrane,allowing cytotoxin granules to enter the cell. The cytotoxin granules expel granzymes which promote cell apoptosis (programmed cell death). Labelled | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Werner, Carol & Mike |
Taille de l’image : | 6060 px × 4040 px |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : | - |