Intraperitoneal injection of H~ 3-thymidine was given to the rats immediately after corticectomy of the parietal lobes. On the 4th day after operation, the cerebral tissue was removed, fixed in Carnoy, serial sectioned, and stained with cresyl violet. 实验用成年大白鼠,切除其双侧顶叶正中部大脑皮质,术后立即腹腔注射~3H-胸腺嘧啶核苷,第4天取大脑组织,Carnoy液固定,连续切片,焦油紫染色。