Swine flu vaccine research. Technician preparing purified plasmids (DNA molecules) containing individual swine flu (influenza A H1n1) virus gene segments. This is being done in order to construct a live swine flu virus as part of research to produce a viable vaccine. Photographed at the National Animal Disease Center (NADC),Ames,Iowa,USA | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Bauer, Scott / US Department of Agriculture |
Bildgröße: | 2446 px × 3661 px |
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