全文获取类型
收费全文 | 2443篇 |
免费 | 207篇 |
国内免费 | 7篇 |
专业分类
耳鼻咽喉 | 3篇 |
儿科学 | 58篇 |
妇产科学 | 34篇 |
基础医学 | 466篇 |
口腔科学 | 32篇 |
临床医学 | 289篇 |
内科学 | 564篇 |
皮肤病学 | 67篇 |
神经病学 | 242篇 |
特种医学 | 68篇 |
外科学 | 258篇 |
综合类 | 6篇 |
一般理论 | 1篇 |
预防医学 | 134篇 |
眼科学 | 28篇 |
药学 | 161篇 |
中国医学 | 5篇 |
肿瘤学 | 241篇 |
出版年
2023年 | 28篇 |
2022年 | 34篇 |
2021年 | 97篇 |
2020年 | 55篇 |
2019年 | 92篇 |
2018年 | 99篇 |
2017年 | 62篇 |
2016年 | 74篇 |
2015年 | 73篇 |
2014年 | 128篇 |
2013年 | 135篇 |
2012年 | 245篇 |
2011年 | 238篇 |
2010年 | 137篇 |
2009年 | 113篇 |
2008年 | 162篇 |
2007年 | 179篇 |
2006年 | 168篇 |
2005年 | 147篇 |
2004年 | 136篇 |
2003年 | 98篇 |
2002年 | 75篇 |
2001年 | 4篇 |
2000年 | 3篇 |
1999年 | 7篇 |
1998年 | 26篇 |
1997年 | 6篇 |
1996年 | 4篇 |
1995年 | 4篇 |
1993年 | 3篇 |
1992年 | 1篇 |
1991年 | 1篇 |
1986年 | 1篇 |
1984年 | 1篇 |
1980年 | 1篇 |
1977年 | 1篇 |
1976年 | 2篇 |
1974年 | 2篇 |
1973年 | 1篇 |
1972年 | 2篇 |
1971年 | 1篇 |
1970年 | 1篇 |
1969年 | 2篇 |
1967年 | 2篇 |
1966年 | 1篇 |
1964年 | 2篇 |
1963年 | 1篇 |
1960年 | 1篇 |
1911年 | 1篇 |
排序方式: 共有2657条查询结果,搜索用时 15 毫秒
101.
Elena Palma Antonio Riva Christophe Moreno Gemma Odena Satvinder Mudan Nikolai Manyakin Rosa Miquel Delphine Degré Eric Trepo Pau Sancho-Bru Jose Altamirano Juan Caballeria Ane Zamalloa Krishna Menon Nigel Heaton Roger Williams Ramon Bataller Shilpa Chokshi 《Alcoholism, clinical and experimental research》2020,44(4):856-865
102.
103.
104.
Joshua Elliott Delphine Deryng Christoph Müller Katja Frieler Markus Konzmann Dieter Gerten Michael Glotter Martina Fl?rke Yoshihide Wada Neil Best Stephanie Eisner Balázs M. Fekete Christian Folberth Ian Foster Simon N. Gosling Ingjerd Haddeland Nikolay Khabarov Fulco Ludwig Yoshimitsu Masaki Stefan Olin Cynthia Rosenzweig Alex C. Ruane Yusuke Satoh Erwin Schmid Tobias Stacke Qiuhong Tang Dominik Wisser 《Proceedings of the National Academy of Sciences of the United States of America》2014,111(9):3239-3244
105.
106.
Sex and Ontogenetic Variation in the Crest of Numida meleagris: Implications for Crested Vertebrates
Delphine Angst Jonathan Barnoud Raphaël Cornette Anusuya Chinsamy 《Anatomical record (Hoboken, N.J. : 2007)》2020,303(4):1018-1034
Crested vertebrates are known from a wide variety of modern and fossil taxa, however, the actual formation and function of the crest is still debatable. Among modern birds, the globally distributed guinea fowl (Numida meleagris) is characterized by having a cranial bony crest (overlain by keratin), but surprisingly little is known about its development. Here, we studied the crest of 202 wild guinea fowl from the same population, using anatomical measurements as well as 2D-morphometry. Our results show that juveniles have smaller skulls than adults and have smaller, simpler crests that are visible even in very young individuals. Among adults, female skulls are smaller than males, and they have smaller, simpler shaped crests, which permit a discrimination between the sexes of 93% when the keratin is preserved with the bony crest, and of 89% when only the bony crest is available. By extrapolation, these results confirm that the crest can be used as an ontogenetic character, as well as for sex discrimination in the fossil record. Our results also show that the overlying keratin does not always mimic the underlying bony crest, which should be considered when reconstructing extinct crested vertebrates. Anat Rec, 303:1018–1034, 2020. © 2019 American Association for Anatomy 相似文献
107.
Pulmonary endothelium as a site of synthesis and storage of interleukin-6 in experimental congestive heart failure 总被引:3,自引:0,他引:3
Gaertner R Lepailleur-Enouf D Gonzalez W Nicoletti A Mandet C Philippe M Mercadier JJ Michel JB 《European journal of heart failure》2003,5(4):435-442
BACKGROUND: Pulmonary endothelium is an early upstream hemodynamic target of left ventricular dysfunction. Interleukin 6 (IL-6) is a pro-inflammatory cytokine reported to increase in congestive heart failure (CHF) patients. AIMS: We sought to determine the origin of IL-6, IL-6 receptor (IL-6R) and gp130 in experimental CHF. METHODS: We used rats with coronary artery ligation as an experimental model of either compensated or decompensated heart failure. Lung and aorta samples were analysed by RT-PCR, ELISA and immunohistochemistry for IL-6 and its receptors. RESULTS: IL-6 mRNA expression increased in the lung of rats with decompensated heart failure and was positively correlated with infarct severity whereas IL-6R mRNA decreased in the lung of myocardial infarction rats and gp130 mRNA remained unchanged. In contrast, there were no changes in IL-6 mRNA expression in the aorta and left ventricular myocardium. IL-6 peptide content as determined by ELISA and Western Blot in lung tissue was 2-fold higher in decompensated heart failure as compared to control rats. These data were confirmed by immunohistochemistry showing a preferential endothelial localization of IL-6 in the CHF lung. IL-6 peptide was also present in the pleural effusion of decompensated heart failure and was positively correlated with IL-6 mRNA expression in the lungs of decompensated HF rats. Pulmonary IL-6 overexpression was associated with nuclear translocation of NF-kappaB and cytosolic degradation of IkappaB. CONCLUSION: Dysfunctional pulmonary endothelium is a source of synthesis and storage of IL-6 in an experimental model of CHF. 相似文献
108.
109.