Methods:36 patients with zero-stage breast cancer diagnosed by breast-duct endoscopy were divided into two groups at random.

Wood ray and vessel of the trunk and branch wood of Cinnamomum camphora Presl;

Differentiation in a secondary xylem vessel element of Populus deltoides using ultrastructural analysis;

Discovered vessel in the plant of Stangeriaceae of Cycadopsida;

Value of selective mammary ductography in the diagnosis of ductal carcinoma in situ;

Clinical retrospective analysis of female ductal carcinoma in situ of the breast;

Classification of intraductal proliferative lesions of breast and its clinicopathologic characteristics;

Methods Twenty-nine cases(times) of 23 patients of thrombotically occluded catheters with hemodialysis were commonly treated with 1.

Objective To investigate the feasibility of transnasal tracheal intubation with core catheters.

57%),which was significantly lower than that of two kinds of catheters((23.

Clinical Value of Selective Salpingography and Recanalization with Home-made Coaxial Catheter;

A clinical study on novel electric conduction balloon electrode catheter;

A comparative study of endoluminal catheter-based ultrasonography and intravenous pyelography on diagnosis of diseases in the upper urinary tract in human;