METHODS CDP [ M 14 C] choline content as indicator of CCT activity was measured by liquid scintillation.

• 方法 采用无血清成年大鼠肺组织培养 ,以 [M 14 C]胆碱作为前体参入CDP 胆碱 ,液闪测定14 C放射性强度 ,反映CCT活性。