Illustration of an active immune system, showing dividing immune cells and segregating IgM and IgG antibodies in the foreground. Cytokines, small signalling proteins, are also shown moving around activating immune cells. | |
Licence : | Libre de droits |
Crédit: | Science Photo Library / Gaertner, Juan |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : | - |