Swine flu virus particles (virions). The 2009 swine flu pandemic is caused by an H1N1 subtype of the influenza virus. | |
Licence : | Droits gérés |
Crédit : | Science Photo Library / Nikid Design |
Model Release : | Non requis |
Property release : | Non requis |
Durée : | 26 Secondes |
Aspect ratio : | 16/9 |
Restrictions : | - |