| BM-hMSC or hMSC | Bone marrow-derived human mesenchymal stem cells |
| HG | Hydrogel |
| HG/PS | Hydrogel with antibiotics directly embedded |
| MP | Microparticles |
| MP/NP | Microparticles embedded with empty nanoparticles |
| MP/PS | Microparticles with antibiotics directly embedded |
| MP/NP+PS or MP/NP+PS(S) | Microparticles embedded with nanoparticles containing antibiotics loaded via synthesis |
| MP/NP+PS(A) | Microparticles embedded with nanoparticles containing antibiotics loaded via absorption |