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111.
目的:观察小檗碱对转基因小鼠胰岛β细胞株胰岛素受体和胰岛素样生长因子1受体mRNA表达的影响。方法:实验于2005-09/2006-10在华中科技大学同济医学院附属同济医院中西医结合研究所完成。①实验材料:培养NIT-1细胞,在低糖(5.5mmol/L)和高糖(11.1mmol/L)环境下,分别加入0,1,3,10,30μmol/L的小檗碱和1μmol/L的格列苯脲,0μmol/L小檗碱组为空白对照组。②实验评估:培养24h后,采用四甲基偶氮唑盐法检测小檗碱NIT-1细胞增殖抑制作用;逆转录-聚合酶链反应测定NIT-1细胞胰岛素受体和胰岛素样生长因子1受体mRNA表达。结果:①四甲基偶氮唑盐法检测发现,不同浓度小檗碱(1~30μmol/L)与NIT-1细胞作用24h后,小檗碱组吸光度值比空白对照组低,随着小檗碱浓度的增加,吸光度值逐渐从0.356±0.061降低至0.162±0.014,而且在各组之间有显著性差异。②在低糖及高糖环境下,与空白对照组相比,小檗碱能促进NIT-1细胞胰岛素受体mRNA的表达(低糖环境:0.27±0.04,0.49±0.02;高糖环境:0.22±0.04,0.42±0.03;P<0.01),但仍低于格列苯脲组(低糖环境:0.75±0.22;高糖环境:0.78±0.01;P<0.01);而且随着小檗碱浓度的升高,NIT-1细胞胰岛素受体mRNA表达的增加更为明显,分别从0.49±0.02增高至0.68±0.44及从0.42±0.03增高至0.71±0.01。与空白对照组相比,小檗碱组胰岛素样生长因子1受体mRNA的表达无明显改变。结论:小檗碱促进胰岛素分泌,其作用机制可能与促进胰岛β细胞胰岛素受体mRNA表达有关。 相似文献
112.
A Shapiro ; T Abe ; LM Aledort ; K Anderle ; MW Hilgartner ; M Kunschak ; FE Preston ; GE Rivard ; K Schimpf 《Transfusion》1995,35(3):204-208
BACKGROUND: Vapor-heated human factor VII concentrate and human factor IX complex are both obtained from prothrombin complex, undergo similar methods of manufacture, and are subjected to an identical two-step vapor-heating process for virus inactivation. STUDY DESIGN AND METHODS: Intermediate-purity vapor-heated human factor VII concentrate and vapor- heated human factor IX complex were monitored for safety with regard to viral infection in the context of an International Factor Safety Study, a prospective study that follows the revised recommendations from the International Congress of Thrombosis and Hemostasis (ICTH). Because the rarity of the respective hereditary deficiencies would have made separate analyses unrealizable, the results were combined for the final analysis. Entry required that patients have no history of transfusion with any blood derivative. After the first infusion of the study drug, patients were monitored for 6 months for the development of non-A, non- B hepatitis (NANBH) and infection with hepatitis B virus (HBV) and for 15 months for infection with hepatitis C virus (HCV) and human immunodeficiency virus (HIV). An event was defined as a positive result on any test for any infection. An alanine aminotransferase level more than 2.5 times the upper limit of normal on two consecutive occasions was defined as an event for NANBH. HBV infection was monitored with tests for three different HBV markers: the HBV surface antigen, antibody against the HBV surface antigen, and antibody against HBV core antigen. HCV and HIV infection were monitored with tests for HCV and HIV antibodies. RESULTS: The 25 patients who completed the study (1 has not completed the study and 1 dropped out) received a total of 434 infusions comprising 17 different production lots of the concentrates. Twenty patients were analyzable for NANBH and 25 for HCV and HIV infection. Since most patients had been given HBV vaccination, only 4 patients were analyzable for this end point. None of the patients showed evidence of having developed an event. These data satisfy ICTH criteria when the products are considered together, but vapor-heated factor VII concentrate does not qualify alone because there were only five patients in this group. CONCLUSION: Vapor-heated factor VII concentrate and vapor-heated factor IX complex are associated with a low risk of viral infection. Preliminary results are also presented, indicating that the concentrates are safe with regard to inhibitor development. 相似文献
113.
目的 探讨慢性粒细胞白血病(CML)患者细胞染色体表型与血清乳酸脱氢酶(LDH)、γ-羟丁酸脱氢酶(HBDH)变化的临床意义.方法 用生化法检测不同病期CML患者的血清LDH、HBDH,并取其骨髓有核细胞用R带分析法作染色体分析.结果 CML加速期或急变期组复杂核型染色体出现频率及血清LDH、HBDH显著高于慢性期组,两组不同染色体表型患者间的LDH、HBDH无统计学差异.慢性期组复杂核型染色体患者的骨髓原幼细胞高于单纯Ph1 者.LDH、HBDH在加速期或急变期组与骨髓幼稚细胞均呈正相关,在慢性期组与外周血WBC呈正相关.结论 CML患者的血清LDH、HBDH水平及复杂核型染色体出现频率与病情相关,血清酶、细胞核型联合检测有助于更准确地判断CML患者的病情及预后. 相似文献
114.
115.
Pulmonary embolism: validation of spiral CT angiography in 149 patients 总被引:41,自引:1,他引:40
van Rossum AB; Pattynama PM; Ton ER; Treurniet FE; Arndt JW; van Eck B; Kieft GJ 《Radiology》1996,201(2):467
116.
The prevalence and mode of spread of gonococcal infections was studied among prepubertal children in Nigeria. Of 16 children with symptoms suggestive of sexually transmissible diseases (STD), 9 (56%) had gonorrhoea, while no causative organism was found in 7. The majority (7; 78%) of the gonococcal isolates produced penicillinase. Three of the cases were by child-to-child transmission, with female peers as the initiators. Prepubertal children should no longer be ignored as propagators of STD. 相似文献
117.
118.
Lt Col SLA Jeffery Miss FE Jeffery 《Journal of visual communication in medicine》2015,38(3-4):234-235
119.
120.
BERNADETTE L. RAMIREZ JONATHAN D. KURTIS PETER M. WIEST PERCIVAL ARIAS FE ALIGUI LUZ ACOSTA PIERRE PETERS G.RICHARD OLDS 《Parasite immunology》1996,18(1):49-52
Paramyosin, a 97 kDa myofibrillar protein, is a candidate vaccine antigen for prevention of infection with the human parasite Schistosoma mansoni . To determine if paramyosin would also induce protection against Schistosoma japonicum , paramyosin was biochemically purified from S. japonicum adult worms. SDS-PAGE demonstrated a single protein with a molecular weight of 97 kDa. In four separate experiments, vaccination of mice with S. japonicum paramyosin without adjuvant induced significant resistance (62%–86%, P < 0.001) against cercarial challenge as compared to controls. These data suggest that S. japonicum paramyosin may represent a candidate vaccine for immunization against schistosomiasis japonica. 相似文献