Extracellular matrix bioink boosts stemness and facilitates transplantation of intestinal organoids as a biosafe Matrigel alternative oleh Zi‐Yan Xu, Jin‐Jian Huang, Ye Liu, Can‐Wen Chen, Gui‐Wen Qu, Ge‐Fei Wang, Yun Zhao, Xiu‐Wen Wu, Jian‐An Ren