首页 | 本学科首页   官方微博 | 高级检索  
文章检索
  按 检索   检索词:      
出版年份:   被引次数:   他引次数: 提示:输入*表示无穷大
  收费全文   617篇
  免费   31篇
  国内免费   35篇
耳鼻咽喉   5篇
儿科学   20篇
妇产科学   4篇
基础医学   58篇
口腔科学   8篇
临床医学   54篇
内科学   85篇
皮肤病学   18篇
神经病学   33篇
特种医学   175篇
外科学   55篇
综合类   42篇
预防医学   56篇
眼科学   15篇
药学   31篇
中国医学   1篇
肿瘤学   23篇
  2022年   3篇
  2021年   2篇
  2020年   3篇
  2019年   3篇
  2018年   8篇
  2017年   4篇
  2016年   5篇
  2015年   12篇
  2014年   12篇
  2013年   12篇
  2012年   18篇
  2011年   17篇
  2010年   25篇
  2009年   37篇
  2008年   31篇
  2007年   36篇
  2006年   38篇
  2005年   37篇
  2004年   17篇
  2003年   12篇
  2002年   21篇
  2001年   19篇
  2000年   6篇
  1999年   22篇
  1998年   29篇
  1997年   36篇
  1996年   23篇
  1995年   16篇
  1994年   12篇
  1993年   15篇
  1992年   8篇
  1991年   6篇
  1990年   14篇
  1989年   20篇
  1988年   23篇
  1987年   16篇
  1986年   11篇
  1985年   13篇
  1984年   3篇
  1983年   8篇
  1982年   4篇
  1981年   6篇
  1979年   2篇
  1978年   2篇
  1977年   3篇
  1975年   3篇
  1974年   2篇
  1973年   2篇
  1960年   1篇
  1957年   1篇
排序方式: 共有683条查询结果,搜索用时 0 毫秒
1.
2.
Purpose: It was investigated whether alterations in neuronal structure and function occasioned by strabismic amblyopia also may be reflected in alterations in the expression on Y type neurons of a Cat-301 antibody sensitive antigen in the lateral geniculate nucleus (LGN) and cortex of our cat model of strabismic amblyopia. Methods/Results: The percentage of positively labelled cells was reduced in LGN laminae that received input from the deviated eye in strabismic amblyopic cats compared with normal cats. In the strabismic cortex, the density of immunopositive neurons was significantly reduced compared with normal, the effect being most pronounced in layer IV Conclusions: Despite previous physiological recordings indicating a decrease in X-cell associated acuity in strabismic amblyopia, the present findings imply that the changes in the early visual experience occasioned by strabismus also produce specific molecular changes in theY neuronal class.  相似文献   
3.
Established nonexpanding hematomas can be successfully treated with minimal morbidity using standard liposucstion techniques at the bedside or in an outpatient setting under local anesthesia. The authors presents a series of eight patients and discuss current concepts of dealing with this common and distressing surgical complication.  相似文献   
4.
A case of intracerebral malignant B cell lymphoma associated with encephalitis typical of Human Immunodeficiency Virus (HIV) infection is described in a 4 year old child, with post-transfusion Acquired Immune Deficiency Syndrome (AIDS) and severe pre-existing cystic encephalomalacia. This report further documents B cell lymphoma as the commonest cause of an intracerebral mass, and an important cause of death in paediatric AIDS. That more than one pathological process may be responsible for neurological symptoms in paediatric AIDS is also emphasised.  相似文献   
5.
6.
7.

Background  

Although the impact of Aboriginal status on HIV incidence, HIV disease progression, and access to treatment has been investigated previously, little is known about the relationship between Aboriginal ethnicity and outcomes associated with highly active antiretroviral therapy (HAART). We undertook the present analysis to determine if Aboriginal and non-Aboriginal persons respond differently to HAART by measuring HIV plasma viral load response, CD4 cell response and time to all-cause mortality.  相似文献   
8.
9.
Primary congenital glaucoma (gene symbol: GLC3) is an ocular disorder that occurs for 0.01-0.04% of blind people. In the majority of familial cases reported so far, this condition is inherited as an autosomal recessive trait. We have recently used a group of 17 GLC3 families with a minimum of two affected offspring and consanguinity in most of the parental generation and mapped the first GLC3 locus (GLC3A) to the 2p21 region. Six families did not show any linkage to the GLC3A locus and thus provided evidence for genetic heterogeneity of this disorder. A total of eight families unlinked to the 2p21 region were used to search for the chromosomal location of the second GLC3 locus. Herein, we describe mapping of a new locus (designated GLC3B) for primary congenital glaucoma to the short arm of chromosome 1 (1p36.2-36.1) that is situated centromeric to the neuroblastoma and Charcot-Marie-Tooth type 2A (CMT2A) loci. A total of 17 DNA markers were genotyped from this region of chromosome 1. Four families showed no recombination with the two markers D1S2834 and D1S402 with a maximum lod score of 4.510 and 4.157 respectively. Pairwise and multipoint linkage analysis and inspection of the haplotypes revealed that the remaining four families are not linked to this part of chromosome 1, thus providing further evidence that at least one more locus for the autosomal recessive form of GLC3 must exist in the genome. Based on the recombination events, the overall linkage map of this region is: tel-D1S1192-D1S1635-D1S1193 - (D1S1597/-D1S489/D1S228)- [GLC3B/D1S2834/D1S402] - (D1S1176/D1S507/D1S407) - D1S2728-(MFAP2/D1S170) - D1S1368 - D1S436- D1S1592-cen.   相似文献   
10.
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号