We attended Bioceramics 33, the 33rd conference and annual meeting of the International Society for Ceramics in Medicine (ISCM), organized in Solothurn, Switzerland, on 17-20 October 2023, with an oral presentation. Dr. Fatih Erdem Baştan orally presented a presentation entitled "Bioinspired Hierarchical Chitosan/Hydroxyapatite Layers: Design of Experiment Optimization and In-Vitro Bioactivity Investigation" in the Bioinspired Materials Session of the Conference, in which many expert scientists participated. The presented results were obtained in the frame of the Tübitak 2219 program. We acknowledge Tübitak for their financial support of the project.