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The Encyclopedia of Life (EOL) is a free, online collaborative encyclopedia intended to document all of the 1.9 million living species known to science. It is compiled from existing databases and from contributions by experts and non-experts throughout the world. Source: Wikipedia
comprehensive reference database for life science and biomedical research
the most comprehensive search platform for engineering
free search engine for accessing the MEDLINE database. MEDLINE is a literature database of life sciences and biomedical information
one of the largest abstract and citation databases of peer-reviewed literature
Web of Science
citation database for accessing high quality scientific research databases such as Web of Science (Core Collection), Current Chemical Reactions, BIOSIS Previews, Medline, Derwent Innovation Index etc.
provides access to online seminar style talks in areas such as Agriculture & Environmental Sciences, Biochemistry, Cell Biology, Genetics & Epigenetics, Microbiology, Neurology, etc.
Free/Open Access Databases
Databases have powerful search tools that can help you get relevant results. Here are some of the more common tools:
Do refer to the Help pages of individual databases as the symbols may differ.