Established in 1988 as part of the National Library of Medicine at the National Institutes of Health. Significant resource for molecular biology information. Because of the wealth of information available from the NCBI, I suggest you refer to the NCBI Site Map and/or Resource Guide for more information:
Freely available version of MEDLINE. Provides access to human medicine journals and many life sciences journals. Be sure to access PubMed through the library website to view the "Get it@ISU" button in the citation record. Coverage: 1950s - present. More information: PubMed Tutorials and Quick Tours - http://www.nlm.nih.gov/bsd/disted/pubmed.html
"The NCBI taxonomy database contains the names of all organisms that are represented in the genetic databases with at least one nucleotide or protein sequence." This is a good resource to use if you need to look up the scientific name of an organism.
"A biosystem, or biological system, is a group of molecules that interact in a biological system. One type of biosystem is a biological pathway, which can consist of interacting genes, proteins, and small molecules. Another type of biosystem is a disease, which can involve components such as genes, biomarkers, and drugs.
A number of databases, such as KEGG and BioCyc, provide diagrams showing the components and products of biological pathways along with corresponding annotations and links to literature. The NCBI BioSystems Database was developed as a collaborative and complementary project to (1) serve as a centralized repository of data; (2) connect the biosystem records with associated literature, molecular, and chemical data throughout the Entrez system; and (3) facilitate computation on biosystems data."