AIM To study the apoptosis of islets after xenotansplantation in brain enwrapped with the biological semipermeable membrane (BSM) and to provide experimental evidence for clinical xenotransplantation of islet cells in the brain.

• 目的 观察生物半透膜包裹异种胰岛样细胞团(ICCs) ；结合相对免疫特赦部位脑实质内移植的凋亡状况 .；为异种胰岛细胞脑内移植可能的临床应用提供实验依据