Keywords: Tuftsin.svg Skeletal formula of tuftsin Created using http //www acdlabs com/download/chemsk html ACD/ChemSketch 10 0 and Inkscape Own 2007-04-19 Fvasconcellos 15 26 19 April 2007 UTC Threonine containing peptides Lysine containing peptides Proline containing peptides Arginine containing peptides |