Fig. 4.

The effect of different concentrations (320, 800, and 1,600 μg/mL) of the developed swellable ciprofloxacin-loaded nano-in-micro hydrogel particles on the viability of RAW 264.7 macrophage cells. Cells were seeded at 50,000 cells/well and incubated with the particles for 24 h at 37°C and 5% CO₂