Cover of Science - 21 March 2008
Clusters of the pathogenic
bacterium Staphylococcus aureus
visualized by scanning electron microscopy.
Staphylococcus
aureus has been called a "superbug"
because of its ability to resist numerous antibiotics and evade host
antimicrobial mediators, including nitric oxide.
Image: Annie Cavanagh/Wellcome Images