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The number of cells permeating through the filter pores from the underside of the filter after brucine immuno-nanoparticles were applied at various concentrations to liver cancer cells for 72 hours (200× magnification). As the drug concentration increased, the number of cell invasions decreased. (A) 10 μg/mL; (B) 20 μg/mL; (C) 40 μg/mL; (D) 80 μg/mL.
