Biocompatibility of a collagen-heparan sulfate scaffold in the porcine brain 
Cao Xiong-bin, Dai Jun, Gong Li, Li Xin, Kuang Liang-hong, Liu Ya-fang, Sun Yuan-ping, Shi Yun-qiong1
Chinese Journal of Tissue Engineering Research . 2015, (21): 3361 -3365 .  DOI: 10.3969/j.issn.2095-4344.2015.21.015