This tutorial describes how DNA microarrays called Virochips are designed to detect known viruses and discover new ones.

The Click & Learn begins with an introduction to Virochip design and function, and also discusses how Virochips use evolutionary sequence conservation among viruses. It then presents different possible results of a Virochip experiment and their interpretations. The Click & Learn poses questions that challenge students to think about how evolutionary relationships can be used to detect new viruses.