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.
BMCBMC has an evolving portfolio of some 300 peer-reviewed journals, sharing discoveries from research communities in science, technology, engineering and medicine.
CDC Data & StatisticsBrowse U.S. Centers for Disease Control and Prevention data and statistics.
ChemIDplusSearch over 400,000 chemical records by Name, Synonym, CAS Registry Number, Molecular Formula, Classification Code, Locator Code, Structure and/or Physical properties.
ISSCRInternational 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 PressSearch 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.
PLOSSearch peer-reviewed articles in Medicine & Health Sciences, Earth & Environmental Sciences, Computer & Information Sciences, Research Analysis & Science Policy and Biology & Life Sciences.
PubChemProvides 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.govSearch over 60 databases and over 2200 selected websites from 15 federal agencies; authoritative U.S. government science information including research and development results.
