http://www.ncbi.nlm.nih.gov/pubmed/17580848 title: Synthesis and evaluation of tripodal peptide analogues for cellular delivery of phosphopeptides. title: Synthesis and evaluation of tripodal peptide analogues for cellular delivery of phosphopeptides. PMID: 17580848 PMID: 17580848 User: guofengye,Tags: guofeg, User: mblau3,Tags: pubmed,