CCSF Library provides free access to subscription article databases, which contain specialized and up-to-date information, especially academic (scholarly) sources that are often not available on the Web.
See the Finding Images in EBSCO Databases box on the left to find articles with radiographic images, and the A-Z Databases page for a full list of databases available to you from the CCSF Libraries.
National Library of Medicine - National Institutes of Health launching point for health sciences information, from peer-reviewed literature to clinical trials. Limit your results to see only the Free Full Text articles available to you by clicking on the link under Text Availability on the left. You'll see it after doing your search. Be sure to look at the FAQs and User Guide, information on finding the full text of articles, and many online trainings at https://learn.nlm.nih.gov/documentation/training-packets/T0042010P/. Also check out the Single Citation Matcher - useful if you have incomplete information about an article.
An open chemistry database at the National Institutes of Health (NIH). Since the launch in 2004, PubChem has become a key chemical information resource for scientists, students, and the general public.
Merck Manual of Diagnosis and Therapy - Online
Online version, with features not available in the print version, and "continuously updated to ensure that the information is as up-to-date as possible."