Subject Headings is a controlled vocabulary thesaurus...terms are arranged in a hierarchy, or "tree structure", that permits searching at various levels of detail from the most general level to more narrow levels to find the most precise terms.
Evidence-Based Care Sheets are summaries on specific key topics, which are focused on nursing practice. Each sheet incorporates the latest evidence, statistics, research and references on a given topic.
BMC
BMC has an evolving portfolio of some 300 peer-reviewed journals, sharing discoveries from research communities in science, technology, engineering and medicine.
CDC Data & Statistics
Browse U.S. Centers for Disease Control and Prevention data and statistics.
ChemIDplus
Search over 400,000 chemical records by Name, Synonym, CAS Registry Number, Molecular Formula, Classification Code, Locator Code, Structure and/or Physical properties.
ISSCR
International Society for Stem Cell Research offers access to highly curated, timely news and on-demand science. Read and submit articles on breakthrough science and commentaries about important issues facing the field in Stem Cell Reports, the ISSCR’s open-access, peer-reviewed journal.
National Academies of Sciences Press
Search more than 9,000 free reports on a wide range of topics in science, engineering, and medicine, providing authoritative information on important matters in science and health policy.
PLOS
Search peer-reviewed articles in Medicine & Health Sciences, Earth & Environmental Sciences, Computer & Information Sciences, Research Analysis & Science Policy and Biology & Life Sciences.
PubChem
Provides information on the biological activities of small molecules via 3 linked databases: PubChem Substance, PubChem Compound, and PubChem BioAssay. PubChem also provides a fast chemical structure similarity search tool.
Science.gov
Search over 60 databases and over 2200 selected websites from 15 federal agencies; authoritative U.S. government science information including research and development results.
