Objective To study the changes of activity of serum alanine transaminase(ALT) and alkaline phosphatase(ALP) in patients with liver diseases and its significance for the diagnosis.

• 目的 探讨肝病病人血清丙氨酸氨基转移酶 (ALT)、碱性磷酸酶 (ALP)活性变化对肝病的诊断意义。