The set up of Interactive digital microscopy laboratory is the first leap of a mod-ern mode of teaching microscopic morphology,which has caused the tremendous changes in teaching experimental histology and embryology.Compared with the traditional teaching mode,it has made the histology and embryology experimental teaching efficient,improved the training of students'ability levels and strengthened students graphics capabilities,which is an important part of experimental teaching in histology and embryology.

Objective To observe the level changes of interleukin-15 (IL-15) and its role and clinical sig-nificance in severe type B hepatitis(HB). Methods IL-15 levels of 47 cases of severe HB and 20 cases of healthy subjects were detected by ELISA,meanwhile the alanine aminotransferase (ALT),total bilirubin (TBIL) and pro-thrombase activity (PTA) were measured as well. The correlation between IL-15 and ALT,TBIL and PTA were ana-lyzed. Results IL-15 in severe HB eases were higher than in control group [(18.9±7.5 ) ng/L vs. (5.9±2.0) ng/L,P <0.01] ,which was higher in death group than in survival group[(24.1±7.5) ng/L vs. (15.7±5.4) ng/L, P<0.01]. IL-15 level was decreasing with the improvement of general condition and liver function recovery. In addition, IL-15 in severe HB was positively correlated with TBIL (r=0.570,P<0.01) and negatively correlated with PTA(r=-0.529,P<0.01) but was not significantly correlated with ALT(r=0.099,P>0.05). Conclusion IL-15 may take part in the pathogenesis of severe HB ,which is consistent with disease condition and is closely re-lated to the improvement of disease. The detection of IL-15 may exert a predicting role in the prognosis of severe HB.

Objective To provide the anatomic basis of transferring the lobe of parotid gland duct for the treatment of dry eye disease. Methods The first interlobar parotid gland duct and zygomatic branch of facial nerve were dissected and observed on parotid gland region of head and face of 5 (10 sides) of adult head specimens. the measurement data was recorded. Results The length of first interlobar duct of superficial parotid was (37. 51±1. 23) mm, the outside diameter of injected parotid duct was (0. 53±0. 15) mm. There was a close ana-tomical relationship between zygomatic branch of facial nerve and first interlobar duct of parotid gland. Conclusion the parotid interlobar duct transposition operation has the reference value in treatment of dry eye desease.