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   699篇
  免费   59篇
  国内免费   3篇
耳鼻咽喉   5篇
儿科学   16篇
妇产科学   6篇
基础医学   104篇
口腔科学   18篇
临床医学   57篇
内科学   201篇
皮肤病学   12篇
神经病学   23篇
特种医学   12篇
外科学   136篇
综合类   27篇
预防医学   33篇
眼科学   19篇
药学   45篇
中国医学   2篇
肿瘤学   45篇
  2023年   5篇
  2022年   13篇
  2021年   12篇
  2020年   10篇
  2019年   12篇
  2018年   21篇
  2017年   22篇
  2016年   18篇
  2015年   18篇
  2014年   33篇
  2013年   43篇
  2012年   46篇
  2011年   46篇
  2010年   37篇
  2009年   31篇
  2008年   36篇
  2007年   47篇
  2006年   45篇
  2005年   38篇
  2004年   30篇
  2003年   20篇
  2002年   23篇
  2001年   15篇
  2000年   9篇
  1999年   14篇
  1998年   7篇
  1997年   6篇
  1995年   5篇
  1994年   1篇
  1993年   3篇
  1992年   4篇
  1991年   12篇
  1990年   5篇
  1989年   5篇
  1988年   10篇
  1987年   11篇
  1986年   10篇
  1985年   9篇
  1984年   4篇
  1983年   2篇
  1982年   2篇
  1980年   4篇
  1979年   6篇
  1978年   1篇
  1977年   2篇
  1976年   3篇
  1975年   1篇
  1973年   1篇
  1969年   1篇
  1967年   1篇
排序方式: 共有761条查询结果,搜索用时 46 毫秒
91.
92.
93.
94.
We describe 5 patients, aged 22–69 years, with massive splenomegaly of unknown origin and features of hypersplenism. Splenectomy corrected the cytopenia(s) and abolished the symptoms in each case; the histological features of the spleen were non-specific and included congestive changes and lymphoid hyperplasia. 2 of these patients developed non-Hodgkin's lymphoma (NHL) 2 and 6 years after spenectomy. A total of 46 cases of splenomegaly of unknown origin have been reported from UK, USA, and Australia so far, and in 9, NHL developed 8 to 80 months after splenectomy. The questions relating to the pathogenesis of splenomegaly and the subsequent development of NHL remain to be answered. We propose that this ‘entity’ be known as Dacie's syndrome, after Sir John Dacie who characterised it in 1969.  相似文献   
95.
96.
97.
Manoharan M  Gomez P  Reyes MA  Soloway MS 《Urology》2006,68(6):1343.e11-1343.e12
The incidence of an adenoid cystic carcinoma on major salivary glands is low, constituting only about 10% to 15% of all parotid malignancies. Cases of delayed metastasis have been reported, but reports of specific renal involvement have not been extensively found. We present the case of a 21-year-old woman with a left renal metastasis from an adenoid cystic carcinoma of the parotid gland that had been surgically treated 7 years previously. The patient underwent successful left radical nephrectomy. During follow-up, the patient developed pulmonary nodules that were metastatic adenoid cystic carcinoma and were surgically excised. At last follow-up, the patient was doing well with no evidence of disease.  相似文献   
98.
Intrathoracic manifestations in non-Hodgkin''s lymphoma.   总被引:1,自引:1,他引:0       下载免费PDF全文
A total of 16 of 86 patients (19%) with non-Hodgkin's lymphoma were found to have intrathoracic disease in this retrospective study. Paratracheal, mediastinal, and hilar lymphadenopathy was the commonest manifestation followed by pulmonary lesions and pleural effusion. The lymphoma was at an advanced clinical stage in all the patients with intrathoracic disease. About one-third of the intrathoracic lesions first developed at the time of relapse after successful initial therapy. There was a better response to therapy when intrathoracic disease was part of the initial presentation than when it was a manifestation of relapse. If it did not respond to therapy it was always indicative of a poor prognosis.  相似文献   
99.
100.
A single rotavirus strain causing asymptomatic infections as well as severe gastrointestinal disease has been described in the neonatal nurseries of the Christian Medical College, Vellore. In this study, quantitative real‐time RT‐PCR was used to determine the association of viral load with the presence of gastrointestinal symptoms in neonates. Viral load was estimated in terms of the crossing point [C(t) value] at which the amplicon could be detected in the real‐time PCR assay. The study was carried out on 103 neonates, including 33 asymptomatic neonates and 70 neonates with different gastrointestinal symptoms. The duration of virus shedding was also compared between five symptomatic and four asymptomatic neonates using real‐time RT‐PCR. There was no significant difference in viral load between symptomatic and asymptomatic neonates (P = 0.087). Among neonates with different gastrointestinal symptoms, those presenting with feed intolerance and abdominal distension had a significantly higher viral load than those with other gastrointestinal symptoms (P = 0.02). For the study on virus shedding, nine neonates were followed up for a median duration of 53 days, with a median of 31 samples tested per child. Extended shedding of low copies of rotavirus was found, with no significant differences in pattern of shedding between symptomatic and asymptomatic neonates. The lack of correlation between viral load and gastrointestinal disease demonstrates yet another difference between neonatal rotavirus infection and infection in older children where higher viral load correlates with severe disease. J. Med. Virol. 82:1803–1807, 2010. © 2010 Wiley‐Liss, Inc.  相似文献   
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