实验用杂种狗14只,行膀胱次全切除(保留三角区)后,用带蒂大网膜修补。结果表明术后11个月新膀胱壁平滑肌再生完全,术后8个月新膀胱壁平滑肌内发现再生之神经纤维;术后4至11个月新膀胱壁内均见间叶细胞向平滑肌过渡。因此我们认为残端平滑肌再生的可能性虽然存在,但新膀胱平滑肌再生之源泉主要可能是大网膜中未分化的间叶细胞。 Experimental hybrid dogs 14, line subtotal bladder resection (retaining the triangle), with pedicled omentum repair. The results showed that the regeneration of the smooth muscle of the new bladder wall was complete at 11 months after operation, and the regenerated nerve fibers were found in the smooth muscle of the new bladder wall at 8 months after surgery. The transition of mesenchyme to smooth muscle was observed in the new bladder wall 4 to 11 months after operation. Therefore, we believe that although the possibility of stump muscle smooth muscle regeneration exist, but the source of new bladder smooth muscle regeneration may be the main omentum undifferentiated mesenchymal cells.