Microbiologists Tom Casey (left) and Mark Rasmussen evaluate a new laser for use in their fecal contamination detection system for meat carcasses. They are working in the laser lab of an Iowa State University collaborator,photochemist Jacob Petrich | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Weller, Keith |
Taille de l’image : | 2670 px × 1761 px |
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