PART 1: (a,b) In vitro biomineralization studies on the composite scaffolds after 7 days and (c,d) after 14 days. (e) EDS spectra of apatite showed that the Ca/P ratio was 1.64. PART 2: (a) MTT assay showing the biocompatibility of the composite scaffolds. (b) The morphology of cells grown in direct contact with other cells. Adapted from Chemical Engineering Journal, Vol. 158, Issue 2, Mathew Peter, N.S. Binulal, S.V. Nair, N. Selvamurugan, H. Tamura, R. Jayakumar. Novel biodegradable chitosan–gelatin/nanobioactive glass–ceramic composite scaffolds for alveolar bone tissue engineering, 253–361, Copyright © 2010, with the permission of Elsevier [100].