Relative protein abundance as a function of a) Drosophila age, defined here as days since eclosure as estimated from Figure 1. The normalized number of peptide hits is plotted on a relative abundance scale of 0 to 1, where 1 represents the maximum number of normalized peptide hits obtained across all ages at both temperatures for individual proteins. Relative abundances at 28 °C (■) and 18 °C (●) are shown for the following proteins: myosin (FBgn0002741), aconitase (FBgn0010100), drosocrystallin (FBgn0005664), Obp44a (FBgn0033268), transferrin 1 (FBgn0022355), and hu li tai shao (FBgn0004873).