The morphologic characteristics of Wanxi White Geeses digestive ducts were studied by observing the compostion of digestive ducts and its section tissue.

Post-embryogenic developmental histology of digestive tract of Silurus soldatovi meridionilis Chen;

Histological and histochemical methods and electron microscopy were used in the preliminary studies on the organization,the location of relevant digestive enzymes and ultrastructure of the digestive tract of the Marphysa sanguinea.

The results showed that the diet with vanadium additive could promote the development of broilers digestive tracts.

The optical microscope, electron microscope and histochemistry were used as basic techniques to study microscopic structure and submicroscopic structure of digestive tubes in 10 adult myocastor coypus.

With the help of routinely silver staining and the method of paraffin sectioning, every part of the digestive tube of Rana nigromaculata has been observed.

This paper observed the morphology of the fore-intestines of digestive system of plateaus pika by routine gross anatomy.