Fig. 7From: 3D printing of injury-preconditioned secretome/collagen/heparan sulfate scaffolds for neurological recovery after traumatic brain injury in ratsA–D vWF expression around the injury site after TBI in the four groups. E Statistical analysis of vWF+ cell numbers. **P < 0.01 versus TBI group, #P < 0.05 versus 3D-CH-ST groupBack to article page