Freeze-drying prepared ready-to-use gelatin @polypropylene nonwoven hybrid sheet for stacking 3D cell culture. - Zhou, Ying; Fu, Jing-Jing; Wang, Lin-Xiang; Lu, Zhisong; Wang, Feng; Xia, Qingyou; Kang, Yuejun; Li, Chang Ming; Yu, Ling (Cellulose, 2019)