The preventive theory of traditional Chinese medicine means treating before occurrence or transference of diseases, which guides the modern health work. This paper analyses some health problem of citizens, proposes the solution and suggestion. Treating before occurrence or transference of diseases should not only be a medical ideal and the true approach is to strengthen system health education to citizens, especially all the students in school.

The paper reviewed the research cooperation on public health between China and US in 30 years since the establishment of Sino-US diplomatic relation, based on the project database of Peking University, and made out the comments on the benefits, shortages and expectation in future cooperation.

[Objective] To explore the status of chlorite pollution in drinking water due to chlorine dioxide , aswell as its causes and counter measures. [Methods]A water plant collecting surface water as raw water slightly pol-luted by organic compounds and B water plant collecting ground water without organic compounds pollution wereselected as observed objectives. Chlorine dioxide generators were used in both of A and B water plants, their rawmaterials was chlorite for A plant and chlorate for B plant. The levels of chlorite in treated water from these twowater plants were determined by amperometric titration. [Results]The levels of chlorite in treated water of A waterplant ranged 0.530～0.760 mg/L, 2.6～3.8 times of the standard value, with a over standard rate of 100％, thelevels of B water plant range 0.257～0.733 mg/L, 1.3～3.7 times of the standard value, with a over standard rateof 83.3％. [Conclusion] The treated water of A and B water plants presented higher pollution by chlorite, the by-product of chlorine dioxide disinfection.

Based on the findings of the past five decades, the seasonal regularity of respiratory disease was summed leading to respiratory tract diseases were summed up.

The author in this text discusses the right of replicating medical records from the angle of law,and puts forward his own viewpoint,that is for the objective medical records,patients can copy them in any time,but for the subjective ones,it just depends on the cases. Generally speaking patients don't have the copy right about them,but when medical treatment trouble occurs,the patients should have the copy right to copy the sealed and stored medical records.

Pituitary tumors, originated from homoral adenohypophyseal cells, are very common in intracranial neoplasms. They are characterized by a wide range of biological behavioral related to hormoral and proliferative activities. Previous pituitary adenoma studies mainly devoted to histological and ultrastructural classification with immunohistochemical techniques. Molecular biology allowed new approaches, especially concerning the pathogenesis and progression. This article reviews the progress of these researches regarding chromosomes, oncogenes, antioncogenes, transgenic animal models and genetic therapy.

Invasive pituitary adenoma is a common pituitary adenoma invading nearby structures such as the sphenoidal sinus, ethmoidal sinus,upper clivus,sellar floor dura and bone. With the development of diagnosis neuroradiology, endocrinology,pathology and microsurgery,dramatic progress has been made on the pathogenesis, pre operative diagnosis and therapy of invasive pituitary adenoma.The development of pathology,molecular biological and medication and surgical therapy of invasive pituitary adenoma in the past few years is discussed in this paper.

[Objective] To investigate the effects of the Sheng Jing Tang, one of tonyfing kidney and promoting blood circulation recipes,on female rats anovulatory due to testosterone and to study the mechanism of action of the recipe. [Methods] The rat models of anovulatory disease were established by injecting the immature female SD rat with testosterone and treated with TCM and herbs to observe estrous cycle level of sex hormone of blood and the change of pathological histology of ovary. [Results] Sheng Jing Tang could improve the level of sex hormone, contract the expanded oxarian vesicles obviously and increase the quantity of luteum. [Conclusions] Sheng Jing Tang had the effect of improving the syndromes of Polycystic Ovary, inducing ovulation and recovering the function of ovary.

Purpose: To explore the relationship between the amount of lymphocyte containing adhesion molecules(CD_(44)) and the development and postoperative metastasis of bone tumors. Method: The percentage of peripheral blood CD_(44) positive lymphocyte's(PB CD_(44) + L) in 45 patients with bone tumor and the tissue CD_(44) content in 7 malignant bone tumors were determined with the flow cytomentric immunological method. Results: The PB CD_(44) + L in benign tumor group(BG) and malignant tumor group(MG) were much higher than that of the control, and the PB CD_(44) + L in MG was higher than that in BG. No difference was found in the content of PB CD_(44) + L between the mahgnant non-metastatic group (MNG) and the malignant metastatic group(MMG). The postoperative PB CD_(44) + L in the BG and MNG was decreased, but CD_(44) was unchanged pre-and postoperatively in the MMG. The patients with high CD_(44) content in the tumor tissues were liable to postoperative lung metastasis. Conclusions: The determination of CD_(44) in PBL and tumor tissue can be helpful to determine the nature of the neoplasm and to predict its prognosis.

Objective To observe the changes of the levels of serum soluble vascular adhesion protein(sVAP)-1 and C-reactive protein(CRP) in patients with cerebral infarction(CI).Methods The levels of serum sVAP-1 and CRP were detected in CI patients at acute stage (ACI group,20 cases) and at convalescence (CCI group,21 cases).The results were compared with normal controls(NC group,21 cases).Results The levels of serum sVAP-1,CRP in ACI group were significantly higher than those in CCI group and NC group(all P