The late Colombian artist was known as a political firebrand but was never didactic as this London retrospective of her ...

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Their specificity for the host is partly achieved by specific host adhesion mechanisms. As adhesins are required for the first step of colonization, they also constitute key virulence factors and have ...

In the often tedious world of international diplomacy, Sergio Vieira de Mello was about as close as you could get to a celebrity—though others have used more exact terms. A dazzled journalist once ...