AIM To study bacteria deoxyribonucleic acid (DNA) in bile, mucus and stone, and provide evidence of molecular biology of bacteria in gallstones formation.

• 目的研究胆囊结石患者胆汁、粘膜和结石细菌脱氧核糖核酸(DNA),提供细菌在胆囊结石形成中的分子生物学证据。