Fig. 4From: M2 macrophages are closely associated with accelerated clavicle fracture healing in patients with traumatic brain injury: a retrospective cohort studyThe representative immunohistochemistry images of the expression of COX-2, CD206, and CD68 in clavicle fracture alone (CF group) and clavicle fracture concomitant TBI (CFT or called CTF group). (Scale bars: 50 μm)Back to article page