A Healthy Coating

An electron micrograph of <em>Staphylococcus aureus</em> bacteria found on the luminal surface of an in-dwelling catheter. The sticky-looking substance woven between the round cocci bacteria is a polysaccharide biofilm, which gives them protection from antimicrobial agents. Developing hydrophilic coatings with biofilm inhibiting surfaces is helping to make medical devices less prone to microbe colonisation.