Li ST, Liu Y, Zhou Q, Lue RF, Song L, Dong SW, Guo P, Kopjar B. A Novel Axial-Stress Bioreactor System Combined with a Substance Exchanger for Tissue Engineering of 3D Constructs. Tissue Eng Part C Methods. 2014 Mar;20(3):205-14. doi: 10.1089/ten.TEC.2013