Fig. 7From: Intravitreal autologous mesenchymal stem cell transplantation: a non-randomized phase I clinical trial in patients with retinitis pigmentosaUltra-widefield retinal image and histopathological finding of a participant with a severe adverse event. a The ultra-widefield retinal image displays the margin of retinectomy upon removing the fibrous membrane along the vitreous base temporal periphery (indicated by arrows). b Histopathological section of the membrane shows osseous metaplasia or heterotopic ossification (hematoxylin and eosin (HE) staining, magnification × 40)Back to article page