Fig. 1

Injection of autologous CIK cells into the tumor cavity via the Ommaya reservoir. a The schematic of placement of Ommaya reservoir. b The catheter of the Ommaya reservoir was implanted into the resection cavity during surgery. c The red circle indicated the reservoir implanted under the scalp. d Autologous CIK cells were injected into the tumor cavity via the Ommaya reservoir under sterile conditions. e The puncture was covered with a dressing patch after injection of autologous CIK cells