Fig. 6From: Exosome-based engineering strategies for the diagnosis and treatment of oral and maxillofacial diseasesSchematic diagram of the construction of Ti-MAO@PEI-S EXO and its biological mechanism. A Preparation of Ti-MAO@PEI-S-EXO. B Mechanism of Ti-MAO@PEI-S-EXO to promote osteogenesis [73]Back to article page