CONFLICT OF INTEREST STATEMENT The authors declare they have no conflicts of interest. DATA AVAILABILITY STATEMENT The data that support the findings of this study are available from the corresponding author upon reasonable request. REFERENCES 1, , , , , , et al. PLGA hybrid porous microspheres as human periodontal ligament stem cell delivery carriers for periodontal regeneration. Chem Eng J. 2021; 420:129703. 2, , . Nanostructured injectable cell microcarriers for tissue regeneration. Nanomedicine.
