METHOD Sphingomyelin was prepared through the process of separating erythrocyte from blood,erythrocytolysis,dehydration,dry,et al,and then hydrolyzed to ceramide by phospholipase C.

方法猪血细胞,用溶血,脱水,干等方法提取鞘,并用C降解鞘成神经酰胺。