Study on ultrastructure of cells in colic mucosa of patients with irritable bowel syndrome;

Tetramethylpyrazine stimulates different ion secretion on rat colonic mucosa with a manner of concentration difference;

An experimental study of colonic mucosal graft for urethral reconstruction;

were employed to study the morphology and composition of bonded film in used sand,which is the base of selection of reclamation method.

The study is aimed at investigating the effects of cysteamine on the structure of intestinal mucous and non-specific immunity.