Fig. 6.

The effect of a PBS (control), b BaGdF₅: 2.5 %Ce³⁺, 2.5 %Tb³⁺ c GdF₃: 2.5 %Ce³⁺, 2.5 %Tb³⁺ (NaBF₄), and d NaGdF₄: 2.5 %Ce³⁺, 2.5 %Tb³⁺ nanoparticles (5 mg/mL, 1 h, 37 °C) on human erythrocytes, as observed using a scanning electron microscope. The arrows indicate single (white arrows) and aggregated (black arrows) nanoparticles attached to the RBC membrane