Development and Characterization of High Efficacy Cell-Penetrating Peptide via Modulation of the Histidine and Arginine Ratio for Gene Therapy oleh Yu Liu, Huan-Huan Wan, Duo-Mei Tian, Xiao-Jun Xu, Chang-Long Bi, Xiao-Yong Zhan, Bi-Hui Huang, Yun-Sheng Xu, Le-Ping Yan