GenBank is a comprehensive public database that stores genetic sequence information. It is maintained by the National Center for Biotechnology Information (NCBI) and provides access to a vast collection of DNA and RNA sequences from various organisms. Researchers and scientists use GenBank to share their findings and to access genetic data for studies in fields like genetics, biology, and medicine. The database is continually updated with new sequences submitted by researchers worldwide. Users can search for specific genes, organisms, or sequences, making it a valuable resource for understanding genetic information and conducting biological research.