Perforated Hydrogels Consisting of Cholesterol-Bearing Pullulan (CHP) Nanogels: A Newly Designed Scaffold for Bone Regeneration Induced by RANKL-Binding Peptides and BMP-2 oleh Cangyou Xie, Michiko Satake-Ozawa, Fatma Rashed, Masud Khan, Masaomi Ikeda, Shunya Hayashi, Shinichi Sawada, Yoshihiro Sasaki, Tohru Ikeda, Yoshiyuki Mori, Kazunari Akiyoshi, Kazuhiro Aoki