Fig. 4From: Pure platelet-rich plasma promotes semaphorin-3A expression: a novel insight to ameliorate intervertebral disk degeneration in vitroPRP enhanced the proliferation of NPCs induced by IL-1β and mitigated NPCs apoptosis (Bar = 100 μm). A The proliferation of NPCs was detected by EDU assay. B The apoptosis of NPCs was observed by TUNEL assay (Bar = 100 μm)Back to article page