An individual biosystem record includes a thumbnail image of a pathway diagram if one has been provided by a source database. The thumbnail links to a full-size image on the source database web site. At present, thumbnail images as well as the ability to highlight selected components (genes, proteins, small molecules) in a full size image of the pathway diagram are currently available only for KEGG records.

If a thumbnail image of a pathway diagram has not been provided by a source database, a full size diagram may be available at the source database by following the link in the BioSystem record for the source's accession number.