This engine supports Boolean operators and information on how to use these operators is also provided. This is a search engine that searches information on bioinformatics, biochemistry, and molecular biology. An extended regular expression link is provided on the top of the page that explains how the unix commands work and some examples are provided to increase the understanding of how the search engine works. A very detailed explanation is provided to explain the exact process the engine undergoes. The user can search for a chemical name, CAS Number, molecular formula, or molecular weight.
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Citeline is a search engine that searches quality sites that are of interest to pharmaceutical and healthcare professional industries. Sites have been pre-screened for quality by specialists to reduce irrelevant results and to increase desired information. Disease and treatment, organizations, news and journals, and research and trials are 4 categories that will help narrow down desired search results. This search engine is directed toward information relating to all areas of education. This is a medical search engine that provides an option for an advanced search and tips.