red:ex 561 nm em 565-650 nm 特点3:荧光在细胞中滞留时间长 nanoparticle enhance suppression effect of mirna in hepg2 cells attenuates the therapeutic resistance of liver cancer hepg2 a和53bp1的免疫荧光结果发现,敲低numb后,53bp1表达上调(fig fluorescence imaging of l-02 hela and hepg2 cells by dna