The incidence of gallstones increases progressively with age.胆石症的发病率随年龄而逐渐增高.Objective To evaluate collodion - enhancing technique for thin paraffin sections of the gallstones.目的:评估火棉胶增强技术在胆囊结石切片中的应用.Gallstones are forme...
A number of local people have been arrested for trying to obstruct lorries loaded with logs.一些当地人因试图阻止满载原木的卡车通行而被逮捕。The defences are intended to obstruct any advance by tanks and other vehicles.这些防御工事用于阻止坦克等车辆前进。Claire p...