全文获取类型
收费全文 | 9696篇 |
免费 | 749篇 |
国内免费 | 660篇 |
专业分类
耳鼻咽喉 | 68篇 |
儿科学 | 514篇 |
妇产科学 | 357篇 |
基础医学 | 721篇 |
口腔科学 | 121篇 |
临床医学 | 1344篇 |
内科学 | 1693篇 |
皮肤病学 | 352篇 |
神经病学 | 469篇 |
特种医学 | 401篇 |
外国民族医学 | 1篇 |
外科学 | 1440篇 |
综合类 | 1500篇 |
现状与发展 | 1篇 |
预防医学 | 479篇 |
眼科学 | 163篇 |
药学 | 594篇 |
9篇 | |
中国医学 | 130篇 |
肿瘤学 | 748篇 |
出版年
2024年 | 24篇 |
2023年 | 446篇 |
2022年 | 647篇 |
2021年 | 843篇 |
2020年 | 803篇 |
2019年 | 357篇 |
2018年 | 350篇 |
2017年 | 342篇 |
2016年 | 344篇 |
2015年 | 357篇 |
2014年 | 624篇 |
2013年 | 523篇 |
2012年 | 635篇 |
2011年 | 631篇 |
2010年 | 570篇 |
2009年 | 421篇 |
2008年 | 395篇 |
2007年 | 497篇 |
2006年 | 508篇 |
2005年 | 397篇 |
2004年 | 379篇 |
2003年 | 337篇 |
2002年 | 225篇 |
2001年 | 199篇 |
2000年 | 51篇 |
1999年 | 22篇 |
1998年 | 22篇 |
1997年 | 24篇 |
1996年 | 21篇 |
1995年 | 19篇 |
1994年 | 23篇 |
1993年 | 10篇 |
1992年 | 4篇 |
1991年 | 6篇 |
1990年 | 10篇 |
1989年 | 6篇 |
1988年 | 14篇 |
1987年 | 8篇 |
1986年 | 11篇 |
排序方式: 共有10000条查询结果,搜索用时 31 毫秒
11.
12.
Gluteal muscle contracture (GMC), presented with hip abduction and external rotation when crouching, is common in several ethnicities, particularly in Chinese. It remains unclear that the reasons why these children are weak and have no choice to accept repeated intramuscular injection. Here, we found some unique cases which may be useful to explain this question.We describe a series of special GMC patients, who are accompanied with congenital heart disease (CHD). These cases were first observed in preoperative examinations of a patient with atrial septal defect (ASD), which was proved by chest X-ray and cardiac ultrasound. From then on, we gradually identified additional 3 GMC patients with CHD. The original patient with ASD was sent to cardiosurgery department to repair atrial septal first and received arthroscopic surgery later. While the other 3 were cured postoperative of ventricular septal defect (VSD), tetralogy of fallot (TOF), patent ductus arteriosus (PDA), respectively, and had surgery directly.The study gives us 3 proposals: (1) as to CHD children, it is essential to decrease the use of intramuscular injection, (2) paying more attention to cardiac examination especially cardiac ultrasound in perioperative period, and (3) taking 3D-CT to reconstruct gluteal muscles for observing contracture bands clearly in preoperation. However, more larger series of patients are called for to confirm these findings. 相似文献
13.
14.
Lesley A. Inker Morgan E. Grams Andrew S. Levey Josef Coresh Massimo Cirillo John F. Collins Ron T. Gansevoort Orlando M. Gutierrez Takayuki Hamano Gunnar H. Heine Shizukiyo Ishikawa Sun Ha Jee Florian Kronenberg Martin J. Landray Katsuyuki Miura Girish N. Nadkarni Carmen A. Peralta Dietrich Rothenbacher Mark Woodward 《American journal of kidney diseases》2019,73(2):206-217
15.
16.
17.
18.
《Molecular immunology》2015,63(2):296-304
Regulatory B cells (Bregs) are defined by their ability to restrain inflammatory responses both in vivo and in vitro. Interleukin 10 (IL-10) production by Bregs is thought to be central to their ability to regulate inflammation, largely due to IL-10s’ ability to suppress pro-inflammatory cytokine production by effector lymphocytes and to maintain the differentiation of regulatory T cells (Tregs). However, with an increase in available published data, it has become evident that Bregs utilize a number of suppressive mechanisms in order to alter the activation of a variety of different lymphocytes. Here, we summarize the multiplicity of cellular targets of Breg-mediated suppression and describe the mechanisms employed by Bregs to suppress chronic inflammatory responses. 相似文献
19.
20.
��ͯѪ��������������ϳ������������ѧ���� 总被引:3,自引:1,他引:2
目的对儿童血管迷走性晕厥(VVS)的传统诊断程序与新诊断程序进行卫生经济学评价。方法采用回顾分析方法,根据不同的诊断程序(即传统诊断程序和新诊断程序),将1995年1月至2005年5月北京大学第一医院儿科确诊的81例VVS患儿分为2组,分别计算其就诊费用、检查费用、住院日、确诊日等,运用经济学最小成本分析法进行评价。结果新诊断程序的平均就诊费用比传统诊断程序少耗费1668.80元;新诊断程序的平均就诊检查费用比传统诊断程序少耗费1413.30元。结论新诊断程序对确诊儿童血管迷走性晕厥具有良好的经济学效益,值得临床推广。 相似文献