fig4
![Efficacy and safety of poly-D,L-lactic acid microspheres as subdermal fillers in animals](https://image.oaes.cc/e6897194-f1d8-4d8f-904d-2a52d6489009/3169.fig.4.jpg)
Figure 4. H&E staining (×100) after PDLLA filler injections. The injected PDLLA microspheres remained in the subdermal layer, and infiltration into surrounding tissues was not apparent. Inflammatory cells were visible around PDLLA microspheres. A: at the 2nd week; B: at the 4th week. PDLLA: poly-D,L-lactic acid