<i>S. aureus</i> Colonies (IMAGE) University of Veterinary Medicine -- Vienna Caption Salicylic acid complexes iron and thus limits the substance for S. aureus colonies. This promotes the formation of biofilms. Credit Tom Grunert/Vetmeduni Vienna Usage Restrictions None 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.