Table 1. Summary of the HIV RT and Protease Sequence Database Web Site.

Web page	Description	URL
Database documentation
Background; primer	Database rationale for lay audience and novice users	http://hivdb.stanford.edu/hiv/rationale.html
		http://hivdb.stanford.edu/hiv/primer.html
Data model for understanding HIV drug resistance mutations	Description of the sources of knowledge of drug resistance mutations	http://hivdb.stanford.edu/hiv/drm.html
User guide	Description of database schema and explanation of specific web site features	http://hivdb.stanford.edu/hiv/userguide.html
Resistance notes	Overview of HIV drug resistance with links to relevant database entries	http://hivdb.stanford.edu/hiv/Notes.pl
Summary statistics	Dynamically updated summary of database content	http://hivdb.stanford.edu/hiv/summary.pl
Database query formsa
Mutations	Users retrieve sequences containing a selected mutation or mutations	http://hivdb.stanford.edu/hiv/prmut.pl
		http://hivdb.stanford.edu/hiv/rtmut.pl
Drug therapy	Users retrieve sequences of isolates from patients receiving a selected drug or drug combination.	http://hivdb.stanford.edu/hiv/PI_form.pl
		http://hivdb.stanford.edu/hiv/RTI_form.pl
References	Users retrieve sequences and summaries of data from studies published by the selected author	http://hivdb.stanford.edu/hiv/Reference.pl
Drug susceptibility	Users retrieve published drug susceptibility data for isolates with selected mutations	http://hivdb.stanford.edu/hiv/Notes.pl
Sequence analysis programs
HIV-SEQ	Compares new RT and protease sequences to previously published sequences with the same mutations	http://hivdb.stanford.edu/hiv/programs.htm
Drug resistance interpretation (beta test version)	Infers drug resistance to 15 available drugs using rules hyperlinked to data within the database	http://hiv-4.stanford.edu/hiv/cgi-test/hivtest-web.pl

^aAdditional database query forms include forms providing access to specific amino acid insertions and to nucleotide patterns at specific amino acid positions.