MGD broadcasts data in a variety of ways to support basic research communities, clinical researchers and advanced users interested in programmatic or bulk access. MGD provides free public web access to data from http://www.informatics.jax.org. The web interface provides a simple ‘Quick Search’, available from all web pages in the system and is the most used entry point for users. The Quick Search may be used to search for genes and genome features, alleles and ontology or vocabulary terms. Multi-parameter query forms for a number of data types are provided to support searches based on specific user-driven constraints, Genes and Markers; Phenotypes, Alleles and Diseases; SNPs; and References. Data may be retrieved from most results pages by downloading text or Excel files, or forwarding results to Batch Query or MouseMine analysis tools (see below).