Layer-by-layer pH-sensitive nanoparticles for drug delivery and controlled release with improved therapeutic efficacy in vivo. - Men, Wanfu; Zhu, Peiyao; Dong, Siyuan; Liu, Wenke; Zhou, Kun; Bai, Yu; Liu, Xiangli; Gong, Shulei; Zhang, Shuguang (Drug Delivery, 2020)