树鼩, 消化系统, 肝炎, 组织学

Objective To investigate the histological characteristics of the tissues and organs of the digestive system of human and normal adult tree shrews and demonstrate their potential as animal models for human diseases in the digestive system. Method Six normal adult tree shrews ( half male and half female) were euthanized and subjected to dissection. The tissues and organs of the digestive system, such as the tongue, esophagus, liver, gallbladder, pancreas, gastric, gastric pyloric gland, duodenum, and jejunum, were collected and subsequently fixed. Histological characteristics of the main organs of the tree shrew’ s digestive system were examined by HE staining on conventional embedded sections. Result

Digestive systems of tree shrews ware highly similar to humans in terms of the histological characteristics

of its main organs. There is a slight distinction, humans possess a thicker muscular layer in the esophagus

whereas tree shrews have a thinner muscular layer in the esophagus. The shape of pancreatic islets in the

human pancreas is mainly spherical, whereas in the tree shrew pancreas the shape of islets is variable,

with long spindle and oval shapes being the primary shapes with small amount spherical shapes.

tree shrew, digestive system, hepatitis, histology