Creatures living in liquid environment can form special exterior structure, internal framework, movement and substance distribution according to their respective living condition. This paper focused on the analysis via examples of macroscopic and microscopic organism. Quantitative analysis is used to make the description more exact and internal features of the organism easier to be examed.

Transarterial chemoembolization (TACE) is the standard treatment of unresectable hepatocellular carcinoma (HCC).However,high incidence of metastasis following TACE has much negative influence on patient survival.In this article,we reviewed negative influence of TACE on biological behavior of residual HCC cells to provide evidence for further application of TACE.

Objective To study the effect of fluoride varnish on microconsistency of enamel after under irradiation in vitro. Methods Normal enamel samples were randomly divided into four groups: control group,irradiation group,fluoride varnish group and fluoride varnish-irradiation group.The microconsistency of enamel surface before and after treatment,after anti-caries test was measured by type MH-5 durometer. Results Fluoride varnish had an inhibitory effect on the decrease of enamel microconsistency etched with lactate buffer.The microconsistency in irradiation group was obviously lower than that in control group(P

This article is to discuss the ethical principles in the diagnosis and treatment of periodontal diseases:①moral responsibility must be strong enough when examinating,diagnosing and curing;②skills should be mastered and improved;③characteristic of senile patients should be attached to.④right oral health education is obligatory.

Objective To investigate the mechanism of malignant transformation in human bronchial epithelial cell line BEP2D exposed to α-particles.Methods The levels of intracellular ROS and malonaldehyde (MDA) in BEP2D,RH22 (passage 22 of α-particle-irradiated BEP2D cells) and BERP35T-1 cells (derived from nude mice bearing malignant transformed cells generated from the passage 35 of α-particle-irradiated BEP2D cells) were assayed with DCFH-DA and MDA kit,respectively.The expressions of 8-OH-dG and γ-H2AX in BEP2D,RH23 (passage 23 of α-particle-irradiated BEP2D cells)and BERP35T-1 cells were also measured with immunocytochemistry and immunofluorescence staining.Results Compared to BEP2D cells,the levels of ROS ( t =4.30 and 3.94,P ＜ 0.05 ) and MDA ( t =4.89 and 15.10,P ＜0.05) increased in RH22 and BERP35T-1 cells.The expressions of 8-OH-dG (t =3.80 and 2.92,P ＜ 0.05 ) and γ-H2AX ( t =7.61 and 12.67,P ＜ 0.05 ) in RH23 and BERP35T-1 cells were also higher than those in BEP2D cells.Conclusions Oxidative stress induces lipid peroxidation and DNA damage leading to genomic instability,which could contribute to cellular malignant transforming process in the human bronchial epithelial cell line BEP2D with α-particle exposure.

Objective To investigate the antioxidant ability and radiosensitivity in the malignant transformed human bronchial epithelial cell line BEP2D induced by α-particle exposure.Methods Glutathione Peroxidase (GPX),Catalase (CAT) and Glutathione (GSH) assay kits were employed to detect GPX and CAT enzyme abilities and the levels of GSH in BEP2D,RH21 ( passage 21 of α-particle-irradiated BEP2D cells),and BERP35T-1 cells (derived from nude mice bearing malignant transformed cells generated from cells of passage 35 of α-particle-irradiated BEP2D cells).MTT assay were used to test the growth rate of BEP2D,RH21 and BERP35T-1 cells treated with 0,30,60,90,120,and 150 μmoL/L H2O2.Colony-forming test and MTT assay were used to examine the cell survival fraction and the growth rate of BEP2D,RH21 and BERP35T-1 cells exposed to 0,2,4,and 8 Gy of γ-rays,respectively.Results GPX and CAT enzyme activities in RH21 and BERP35T-1 cells were obviously lower than in BEP2D( t = 5.75-67.92 ,P ＜ 0.05 ).CAT enzyme activity in BERP35T-1 was lower than that in RH21 cells (t =22.25 ,P ＜0.01 ).Compared to BEP2D cells,decreased level of GSH was detected in BERP35T-1 cells(t = 7.76,P ＜ 0.05 ),but there was no change in RH21.After treatment with 30,60,90,120,and 150 μmol/L H2O2,the growth rates of BEP2D were all higher than those of BERP35T-1 cells(t = 10.37-58.36,P ＜0.01 ).Meanwhile,the growth rates of BEP2D were all higher than those of RH21 cells after treatment with 60,90,120,and 150 μ mol/L H2O2 (t = 29.90-84.68,P ＜ 0.01 ).In addition,compared to BEP2D cells,decreased cell survival fraction and growth rate of BERP35T-1 cells were observed after irradiation with 2,4,and 8 Gy of y-rays ( t = 5.87-34.17,P ＜ 0.05 ).The cell survival fraction and growth rate of RH21 were all lower than those of BEP2D cells at 4 and 8 Gy post-irradition( t =6.33- 45.00,P ＜ 0.05 ).Conclusion The function of antioxidant system decreased in the α-particleinduced transformed cells,which could contribute to the acceleration of cellular malignant transforming process and radiosensitivity.

Objective To discuss the value of combination of various clinical laboratory methods in the diagnosis of Mycobacteri-um tuberculosis(MTB) .Methods T-SPOT .TB ,sputum smear ,sputum culture ,and MTB-DNA detection were used to detect MTB .The sensitivity ,specificity ,rate of missed diagnosis ,coincidence rate and correct diagnosis index for tuberculosis diagnosis of the four methods and their pairwise combinations were analyzed and compared .Results Comparing with other methods ,T-SPOT . TB combined with MTB-DNA detection had the highest sensitivity ,coincidence rate and correct diagnosis index ,and the lowest rate of missed diagnosis ,with significant difference(P<0 .05) .Conclusion T-SPOT .TB combined with MTB-DNA detection could be used as an adjuvant method for the early diagnosis of tuberculosis .

2.2 in serum, the particle size of HDL shifted towards smaller sizes, which indicates that reverse cholesterol transport might be weakened and HDL maturation might be abnormal.

In this article, we report the pancreatic islet cells function of newborn pig pancreatic tissues cultured by Ham F_(10), and the condition of graft survived into the bodies of Sprague-Dawley rats, and also study the influence of Glycyrrhiza uralensis to the grafts. The cultured islet cells of newborn pig were transplanted into the mesenteric cavities (the first & second group), kidney cystic(the third group) and brain tissucs (the fourth group) of the 4 groups adult Sprague-Dawley rats. The first group rats drank Glycyrrhiza uralensis water, after 8～11weeks of operation a examination pathological was made with the cut graft The results showed that the first and second group grafts survived over 11weeks, and survived better the group drunk the Glycyrrhiza uralensis water was much better than other. The purpose of this experiment is to find the heteropolar source of pancreatic tissues offering body.