This Hair is bright, which to be provided, Buddhism to put mesh Standard Wu Quality Satisfied meter Teeth in the border faintly acid pH Ring and enter Elixirs comprising its Fine born of the same parents Guide. Teeth Teeth Cheng Xing Group of Bao Han Satisfied meter of Suo Shu Satisfied meter points and peptide. Teeth Cheng Xing Group of Suo Shu point form Zhi Quality Body Huo Rubber beam, and it is same or different containing 2 to 8 Ge (Ren Election that the peptide sequence, which has) position Single with His (Group propylhomoserin) Qi Shi And with Suan An Ji Suan Final only.本發明提供了能在弱酸性pH環境中釋放目標物質的納米顆粒和包含其的細胞導入劑。所述納米顆粒包含納米顆粒成型組分和肽。所述顆粒成型組分形成脂質體或膠束,且所述肽序列具有含有2至8個(任選地爲相同的或不同的)以His(組氨酸)起始並以酸性氨基酸終止的單位。