Science Research searches over 300 databases in real time. This helps you to avoid outdated articles and spam. Also, many science databases are not indexed by Google. This search can search those as well.
WONDER -- Wide-ranging Online Data for Epidemiologic Research is an easy-to-use, menu-driven system that makes the information resources of the CDC available to public. In this class, check out the "Topics" or "A to Z" tab to narrow the search down to your pathology.