Salmonella sterilisation testing. Close-up of a microbiologist handling two petri dishes that show the sterilization effects of negative air ionization. The samples are from a chamber aerosolized with Salmonella enteritidis bacteria. The sample at left is untreated and a bacterial culture is present,while the sample at right has been treated by negative air ionization that has reduced the bacterial load. This research is being carried out by the Agricultural Research Service of the US Department of Agriculture | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / US DEPARTMENT OF AGRICULTURE / KEN HAMMOND |
Bildgröße: | 3574 px × 2454 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: | - |