Using NADPH-diaphorase histochemistry staining, the morphology and distribution of the nitric oxide synthase (NOS) positve neurons in myenteric plexus of goat small intestine were studied at 15 days,4 months and 12 months of age.

• 用NADPH-黄递酶组织化学方法对15日龄、4月龄和12月龄在山羊小肠肌间神经丛中NOS阳性神经元形态和分布进行了比较研究。