Objective To investigate the relationship between PCNA and nm23 expression in breast cancer tissue and its prognosis. Methods Detected the expression of PCNA and nm23 of 278 cases of breast cancer by immunohistochemical technique S-P and analyzed it combined with the clinicopathology. Results PCNA positive rate was 37.4%(104/278),nm23 positive rate was 59.7%(166/278).PCNA and nm23 genes expression had no obvious correlation with the breast cancer pathological type,patients age and clinical stage (P > 0.05). PCNA expression had the positive correlation with the axillary lymph nodes meta-sitasis but negative to 5-year survival rates(P < 0.01 ),nm23 expression had the negative correlation with the axillary lymph nodes metasitasis but positive to 5-year survival rates(P < 0.01 ). PCNA and nm23 expression had the obvious negative correlation between them(P < 0.01 ). Conclusion Combined detection the expres-sion of PCNA and nm23 in breast cancer tissue will be important reference to forcast and evaluate the prognosis of the breast cancer patients.

Aim To probe into the best conditions for the establishment of endometriosis model in rats by the orthogonal experiment method.Methods Autotransplantation was used to establish the endometriosis model in rats by the orthogonal experiment method in which four main factors were considered to optimize the condition of model,according to the volume of heterotopic endometrium.Results The para ligament of uterus was the best place for transplanting.Both dissecting muscular layer and injecting estrin played an important role in the establishment of endometriosis model in rats. The value of four factors decreased progressively according to the injection of estrin,the dissection of muscular layer,the direction of endometrium implantation and oestrus.Conclusions By optimizing the condition for the establishment of endometriosis model in rats by orthogonal experiment,the volume of heterotopic endometrium was improved.A technology platform for pharmacodynamics research was thus offered.

Objective: To know the psychological health status of the college students with guarded experience and to supply reasonable suggestion for psychological health education and consultation.Methods: SCL-90 questionairs were applied to survey the psychological health status of the college students in grade 2 and 3.Results: The psychological characteristic of the students with guarded experience involve.(1) Compared with the national college students norm,the scores of interpersonal sensitivity,depression anxiety and horror are higher(.2) Compared with the college students without guarded experience,the scores of anxiety and horror are higher.(3) Inside the students with guarded experience,the scores of interpersonal sensitivity,depression,anxiety and horror in females are higher than those in males.The above outlined have statistical significance.Conclusion: The guarded experience has positive influence on college students,psychological health,especially on females,We should enforce psychological health education,improve the psychological quality and reduce the psychological disease.