全文获取类型
收费全文 | 126053篇 |
免费 | 10882篇 |
国内免费 | 8190篇 |
专业分类
耳鼻咽喉 | 1019篇 |
儿科学 | 1563篇 |
妇产科学 | 2322篇 |
基础医学 | 14819篇 |
口腔科学 | 2059篇 |
临床医学 | 16434篇 |
内科学 | 20696篇 |
皮肤病学 | 1450篇 |
神经病学 | 6876篇 |
特种医学 | 4314篇 |
外国民族医学 | 70篇 |
外科学 | 13093篇 |
综合类 | 18908篇 |
现状与发展 | 24篇 |
一般理论 | 5篇 |
预防医学 | 7810篇 |
眼科学 | 3651篇 |
药学 | 12815篇 |
115篇 | |
中国医学 | 6038篇 |
肿瘤学 | 11044篇 |
出版年
2024年 | 345篇 |
2023年 | 1822篇 |
2022年 | 4658篇 |
2021年 | 5862篇 |
2020年 | 4222篇 |
2019年 | 4061篇 |
2018年 | 4128篇 |
2017年 | 3689篇 |
2016年 | 3460篇 |
2015年 | 5217篇 |
2014年 | 6534篇 |
2013年 | 6091篇 |
2012年 | 8901篇 |
2011年 | 9759篇 |
2010年 | 5947篇 |
2009年 | 4734篇 |
2008年 | 6506篇 |
2007年 | 6520篇 |
2006年 | 6537篇 |
2005年 | 6483篇 |
2004年 | 4460篇 |
2003年 | 4211篇 |
2002年 | 3560篇 |
2001年 | 3226篇 |
2000年 | 3311篇 |
1999年 | 3455篇 |
1998年 | 2258篇 |
1997年 | 2177篇 |
1996年 | 1574篇 |
1995年 | 1467篇 |
1994年 | 1270篇 |
1993年 | 822篇 |
1992年 | 1230篇 |
1991年 | 1078篇 |
1990年 | 934篇 |
1989年 | 827篇 |
1988年 | 721篇 |
1987年 | 668篇 |
1986年 | 514篇 |
1985年 | 463篇 |
1984年 | 249篇 |
1983年 | 179篇 |
1982年 | 119篇 |
1981年 | 119篇 |
1980年 | 79篇 |
1979年 | 120篇 |
1978年 | 59篇 |
1976年 | 52篇 |
1975年 | 55篇 |
1974年 | 68篇 |
排序方式: 共有10000条查询结果,搜索用时 0 毫秒
11.
12.
Y.R. Song B. Wu Y.T. Yang J. Chen L.J. Zhang Z.W. Zhang H.Y. Shi C.L. Huang J.X. Pan P. Xie 《Brazilian journal of medical and biological research》2015,48(11):973-982
Bipolar disorder (BD) is a common psychiatric mood disorder affecting more than 1-2%
of the general population of different European countries. Unfortunately, there is no
objective laboratory-based test to aid BD diagnosis or monitor its progression, and
little is known about the molecular basis of BD. Here, we performed a comparative
proteomic study to identify differentially expressed plasma proteins in various BD
mood states (depressed BD, manic BD, and euthymic BD) relative to healthy controls. A
total of 10 euthymic BD, 20 depressed BD, 15 manic BD, and 20 demographically matched
healthy control subjects were recruited. Seven high-abundance proteins were
immunodepleted in plasma samples from the 4 experimental groups, which were then
subjected to proteome-wide expression profiling by two-dimensional electrophoresis
and matrix-assisted laser desorption/ionization-time-of-flight/time-of-flight tandem
mass spectrometry. Proteomic results were validated by immunoblotting and
bioinformatically analyzed using MetaCore. From a total of 32 proteins identified
with 1.5-fold changes in expression compared with healthy controls, 16 proteins were
perturbed in BD independent of mood state, while 16 proteins were specifically
associated with particular BD mood states. Two mood-independent differential
proteins, apolipoprotein (Apo) A1 and Apo L1, suggest that BD pathophysiology may be
associated with early perturbations in lipid metabolism. Moreover, down-regulation of
one mood-dependent protein, carbonic anhydrase 1 (CA-1), suggests it may be involved
in the pathophysiology of depressive episodes in BD. Thus, BD pathophysiology may be
associated with early perturbations in lipid metabolism that are independent of mood
state, while CA-1 may be involved in the pathophysiology of depressive episodes. 相似文献
13.
当代社会,老年人口比例呈现不断上升的趋势,老龄化问题日益严峻。因此,如何有效地延缓衰老不仅成为了世界医学研究的热点,也成为了全球亟待解决的问题。中医药在延缓衰老方面经验丰富,而滋阴药在此类研究中效果显著。本文通过整理滋阴药抗衰老作用机制的若干文献,对滋阴复方六味地黄丸、二至丸、左归丸及其他滋阴中药延缓衰老的机制研究进展进行综述。 相似文献
14.
15.
Yaqian Li Jingjing Yu Yun Kuang Chengkun Wu Liu Yang Qiulian Fang 《Current medical research and opinion》2020,36(9):1433-1439
Abstract
Objective
The sex, age, medical history, treatment, tobacco use, race risk (SAMe-TT2R2) Score; the sex, age, medical history, treatment, tobacco use, genotype combination (SAMe-TT2G2) Score; and the so-called modified SAMe-TT2R2 scores have been proposed to predict the anticoagulation quality for patients with non-valvular atrial fibrillation (NVAF). The data from a prospective controlled study is used to validate the SAMe-TT2R2 and SAMe-TT2G2 scores in Chinese NVAF patients treated with warfarin and to evaluate the association of factors with time in therapeutic range (TTR) to predict the quality of oral anticoagulation control. 相似文献16.
17.
Dan-Feng Xu Bing Wu Jin-Xin Wang Jian Yu Jian-Xin Xie 《World Journal of Clinical Cases》2021,9(5):1096-1102
BACKGROUNDGuillain-Barré syndrome (GBS) is a rare disorder that typically presents with ascending weakness, pain, paraesthesias, and numbness, which mimic the findings in lumbar spinal stenosis. Here, we report a case of severe lumbar spinal stenosis combined with GBS.CASE SUMMARYA 70-year-old man with a history of lumbar spinal stenosis presented to our emergency department with severe lower back pain and lower extremity numbness. Magnetic resonance imaging confirmed the diagnosis of severe lumbar spinal stenosis. However, his symptoms did not improve postoperatively and he developed dysphagia and upper extremity numbness. An electromyogram was performed. Based on his symptoms, physical examination, and electromyogram, he was diagnosed with GBS. After 5 d of intravenous immunoglobulin (0.4 g/kg/d for 5 d) therapy, he gained 4/5 of strength in his upper and lower extremities and denied paraesthesias. He had regained 5/5 of strength in his extremities when he was discharged and had no symptoms during follow-up.CONCLUSIONGBS should be considered in the differential diagnosis of spinal disorder, even though magnetic resonance imaging shows severe lumbar spinal stenosis. This case highlights the importance of a careful diagnosis when a patient has a history of a disease and comes to the hospital with the same or similar symptoms. 相似文献
18.
19.
20.