Figure 2.

The overall design of the HIP² database. 1 = Query of protein "X" observed in plasma proteome; 2 = Query of peptide "Y" observed in plasma proteome; 3 = Output result of "X" protein page ; 4 = Link to external database; 5 = Link to experimental page of protein "X"; 6 = Link to the peptide page of the protein "X"; 7 = Output result of peptide "Y"; 8 = Iterative query from peptide page to search for other proteins associated with the peptide "Y".