A Bacillus subtilis biofilm (IMAGE) eLife Caption Swarming Bacillus subtilis cells form a multilayered biofilm in a dish when exposed to the antibiotic kanamycin (pictured here on the right-hand side of the dish) Credit Grobas et al. (CC BY 4.0) Usage Restrictions This image is free to be reused, as long as it is credited as appropriate. License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.