Winias, S., Ernawati, D.S., Ariani, M.D. and Rahayu, R.P. 2017. Scaffold combination of chitosan and collagen synthesized from chicken feet induces osteoblast and osteoprotegerin expression in bone healing process of mice. Dental Journal. 50, 2 (Jun. 2017), 86–90. DOI:https://doi.org/10.20473/j.djmkg.v50.i2.p86-90.