To view this video please enable JavaScript, and consider upgrading to a web browser that supports HTML5 video Movie S1. Fabrication of hydrogel-laden paper scaffold. PSMa-coated papers were further modified with PLL and calcium chloride. Surface-modified paper was placed in alginate solution for gelation. Alginate solution was prepared with 1% (wt/vol) alginate and blue food-coloring agents for verification. Hydrogel-laden paper scaffold system for origami-based tissue engineering Su-Hwan Kim, Hak Rae Lee, Seung Jung Yu, Min-Eui Han, Doh Young Lee, Soo Yeon Kim, Hee-Jin Ahn, Mi-Jung Han, Tae-Ik Lee, Taek-Soo Kim, Seong Keun Kwon, Sung Gap Im, and Nathaniel S. Hwang PNAS. 2015. DOI: 10.1073/pnas.1504745112 Download Original Video Browse All Videos »