The NCBI houses a series of databases relevant to biotechnology and biomedicine and is an important resource for bioinformatics tools and services. Major databases include GenBank for DNA sequences and PubMed, a bibliographic database for the biomedical literature. Other databases include the NCBI Epigenomics database.
SciFinder-n provides online access to Chemical Abstracts (1907-present) and other chemical databases. Includes indexing for chemical journals, patents, chemical substances, and chemical reactions. Requires individual registration.