A 1976 US half dollar was placed on the surface of agar gel inoculated with faecal bacteria. The bacteria propagated throughout the agar gel except under the half dollar. For this photograph,the coin was moved to the left to reveal its bactericidal effect. The light and dark spots indicate bacterial colonies inside the agar gel and on its surface | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / SciMAT |
Taille de l’image : | 3820 px × 2550 px |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : |
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