Changes of intracellular calcium concentration in fetal lamb ductus arteriosus, small pulmonary artery and aorta muscle cells under hypoxic conditions:an in vitro study;

Mechanism of closure of ductus arteriosus and its clinical importance;

Ultrasonic survey of fetal ductus arteriosus;

It is important to master the indications of chemotherapy by artery catheter correctly.

Objective To study vitA impact on the calcium concentration of the ductus ateriosus and the lung maturation of premature delivery fetal rabbits.

The effect of Retinoid Acid on proliferation and related cell signal pathway of human fetel smooth muscle cells from aorta,pulmonary artery and arterial duct in vitro;

Applied anatomy of ligation of patent arterial duct on extrapleura through left triangle of auscultatory;

Anatomic studies on ligation of patent arterial duct via the left thorax;