Mice Deficient in Urokinase-Type Plasminogen Activator Have Delayed Healing of Tympanic Membrane Perforations
Figure 6
Immunohistochemistry for neutrophils in the open TMs in WT (A), tPA−/− (B), uPA−/− (C) mice and the only closed TM in uPA−/− (D) mice at day 9 after perforation.
Arrows indicate neutrophil staining. Scale bar, 200 µm. EEC, external ear canal; MEC, middle ear cavity; TM, tympanic membrane.