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Cumulative release of the model drug (rhodamine B) from drug-releasing implants (based on titania nanotube arrays on the surface of titanium wires) in trabecular bone, showing changes of concentration at different times (from 1 hour to 5 days). The concentration changes over time are presented for selected locations at (A) vertical (x-z) and (B) horizontal (x-y) distances from the surface of the implant.
