Figure 2: a) PubMed search with the key words “Proteomic” (blue), “Mass Spectrometry” (red), “Software” (green), and with AND-connection between “Proteomic” and the other key words (violet) in “All Fields” with PubMed; b) PubMed search with the key words “Enzyme” and “Software” and “Mass Spectrometry” as And-connection (AND) in “Title/Abstract” with PubMed.