Figure 1

Distribution publication type information associated with Genbank sequences. Pie-chart showing the percentage of Genbank records that have: no associated citation information (blue; 50,480,022 records), a PubMed ID indicating the publication's abstract is available from NCBI's PubMed database (red; 26417760 records), citation information corresponding to PubMed indexed publications but no PubMed ID (yellow; 3,641,494 records), a patent citation (green; 4,830,186 records), or citation information corresponding to a journal not indexed in the PubMed database (purple; 1,747,039 records).