As expected, even after eight hours, let alone a month, the uncoated and the polydopamine-coated stents were saturated in cell growth triggered by immune activity.
They left the rest in place, allowed the animals to recover from the surgery, and then let them go about their lives for a month before killing them and collecting their stents for analysis.
To that end they picked a group of rabbits and implanted into their abdominal aortas stents which had no coating, stents coated only in polydopamine, and stents which had also had platelet membranes attached to them.