Fig. 13. Top row, safranin-O stained histology sections of cartilage exposed to (a) pure media, (b) IL-1α (1 ng mL⁻¹), (c) IL-1α (1 ng mL⁻¹) + ketorolac (4 mg mL⁻¹), (d) IL-1α (1 ng mL⁻¹) + ketorolac (4 mg mL⁻¹) uncoated emulsion and (e) IL-1α (1 ng mL⁻¹) + ketorolac (4 mg mL⁻¹) PBAE coated emulsion for 20 days. Scale bar = 200 μm. Bottom row, histograms of red colour intensity for the corresponding samples.