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Plasminogen activator inhibitor 1 (PAI-1), substance P (SP), and substance P receptor (SP-R) levels in rabbits at day 60 after insertion (optical density [OD], mean ± standard deviation).
Notes: Compared with the sham-operated control (SO) group. *P<0.05. Compared with the copper (Cu) group, ▲P<0.05.
Abbreviation: LDPE, low-density polyethylene.
