Life science is based on an experimental basis, so the basic experimental teaching for biological and medical graduates is very important. Targeted basic experimental teaching content can help biological and medical graduates lay a solid experiment foundation and promote them to fol-low the development of cutting-edge bioscience.The basic experimental teaching content for biological graduate is set up into four experimental categories uniformly: molecular biology, proteomics experi-ments, bioinformatics experiments and large equipment use. Each category is further set into three experimental projects: validation experiments, comprehensive experiments and independent research experiment. By increasing the degree of openness of large instruments and equipment, improving teaching methods and perfecting appraisal methods, ggraduates' experimental skills, research ability and innovation ability are trained, and the quality of experimental teaching has been improved.

Objective To evaluate the curative effect of laparoscopic cholecystectomy(LC)in the treatment of schistosomia-sis liver fibrosis portal hypertension combined with calculous cholecystitis. Methods The clinical data of 196 cases of schistoso-miasis liver fibrosis portal hypertension combined with calculous cholecystitis(Child A 160 cases,Child B 36 cases)treated with LC were collected and analyzed from June 2006 to June 2013. Results Among the 196 cases,there were 154 cases of schistoso-miasis liver fibrosis portal hypertension combined with chronic calculous cholecystitis,and 42 cases of schistosomiasis liver fibro-sis portal hypertension combined with acute calculous cholecystitis. Totally 189 patients underwent LC successfully,but 7 were transited to the general operation because of LC failure,including 3 cases of adhesion around gallbladder and ambiguous dissec-tion of gallbladder triangle,and 4 cases of intraoperative bleeding and the bleeding was difficult to stop under the laparoscopy. All the 196 patients were cured. Conclusion LC is effective and safe in the treatment of schistosomiasis liver fibrosis portal hyperten-sion combined with calculous cholecystitis.

Objective This study aims to investigate the diagnosis and treatment of external root resorption of adjacent teeth caused by impacted teeth via cone-beam computed tomography (CBCT). Methods A total of 19 teeth from 15 patients with uncertain external root resorption caused by an adjacent impacted tooth were examined from January 2011 to December 2011. All teeth with uncertain external root resorption were scanned by CBCT. Three dimensions reconstruction were the con-ducted to determine the location and extent of resorption. Results In all cases, CBCT identified the accurate location and extent of external root resorption caused by adjacent impacted teeth. Furthermore, the technique provided impacted teeth location in three dimensions, including the relation between the impacted teeth and surrounding vital structures. Conclusion CBCT can provide direct and accurate images of the location and extent of external root resorption, as well as the location of the adja-cent impacted teeth in three dimensions. Therefore, the proposed technique provides reliable information for clinical diagnosis and treatment.