Figure 2From: Molecular evolution of neuropeptides in the genus DrosophilaDirect peptide profiling of the ring gland of different Drosophila species. (ai-di) Mass range 900-1,600 Da. The protonated mass of AKH is not visible, but the Na+ and K+ adducts are prominent. (aii-dii) Mass range 2,050-2,250 Da. Only one mass peak corresponding to CPPB is visible.Back to article page