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   680篇
  免费   39篇
  国内免费   7篇
儿科学   66篇
妇产科学   40篇
基础医学   54篇
口腔科学   12篇
临床医学   53篇
内科学   126篇
皮肤病学   32篇
神经病学   44篇
特种医学   163篇
外科学   37篇
综合类   27篇
预防医学   15篇
眼科学   4篇
药学   39篇
肿瘤学   14篇
  2020年   4篇
  2018年   5篇
  2015年   5篇
  2014年   5篇
  2013年   7篇
  2012年   8篇
  2011年   7篇
  2010年   15篇
  2009年   9篇
  2008年   7篇
  2007年   16篇
  2006年   18篇
  2005年   5篇
  2004年   14篇
  2003年   13篇
  2002年   8篇
  2001年   13篇
  1999年   19篇
  1998年   32篇
  1997年   29篇
  1996年   29篇
  1995年   30篇
  1994年   16篇
  1993年   22篇
  1992年   12篇
  1991年   10篇
  1990年   13篇
  1989年   20篇
  1988年   23篇
  1987年   14篇
  1986年   24篇
  1985年   27篇
  1984年   18篇
  1983年   19篇
  1982年   26篇
  1981年   12篇
  1980年   20篇
  1979年   7篇
  1978年   14篇
  1977年   16篇
  1976年   20篇
  1975年   14篇
  1974年   15篇
  1973年   10篇
  1972年   6篇
  1971年   5篇
  1969年   7篇
  1968年   6篇
  1967年   5篇
  1966年   6篇
排序方式: 共有726条查询结果,搜索用时 15 毫秒
1.
BACKGROUND: Toxic epidermal necrolysis (TEN) is a severe and potentially fatal drug reaction characterized by an extensive skin rash with blisters and exfoliation, frequently accompanied by mucositis. The wounds caused by TEN are similar to second-degree burns and severe cases may involve large areas of skin loss. OBJECTIVES: Analysis of our results in patients with TEN and evaluation of the variety of therapeutic interventions that has been studied and suggested in TEN. PATIENTS/METHODS: Retrospective analysis of 19 consecutive patients with TEN treated in our burns centre between 1989 and 2004. RESULTS: Immediate withdrawal of any potentially fatal drug, maximum supportive care, and a restricted and tailored antibiotic, medical and surgical treatment regimen confined mortality to 21%, whereas prognosis scores like APACHE II and SCORTEN predicted mortality of 22 and 30%, respectively. A positive contribution of selective digestive decontamination is suggested but has yet to be established. CONCLUSIONS: Because of a potentially fatal outcome, fast referral of a patient suspected of TEN to a specialized centre (mostly a burns unit or specialized dermatology centre) for expert wound management and tailored comprehensive care is strongly advised and contributes to survival.  相似文献   
2.
1背景 育龄妇女常见慢性下腹痛,可造成身体损害、情绪忧伤及导致巨大的健康服务费用。美国在这方面的花费超过8亿8千万美元(Mathias 1996)。英国全国数据库的一般性诊治资料显示,慢性下腹痛发病率及流行率与偏头痛、背部痛、哮喘发病率相似(Zondervan 1999)。  相似文献   
3.
Objective: Our purpose was to determine whether insulin-like growth factors I and II preferentially stimulate uterine leiomyoma cells versus myometrial cells in monolayer culture.Study design: Leiomyomas and normal myometrium were obtained at hysterectomy from five premenopausal women. Specimens were enzymatically digested for use in primary monolayer cell cultures. By use of serum-free media, insulin-like growth factor I or II was added in 1, 10, and 100 ng/ml concentrations to both cell types with the patient serving as her own control. Cell number, prolactin production, and proliferative index values were measured on day 15 of cell culture.Results: Significant increases in cell number were found in the leiomyoma cultures (p < 0.05) treated with 10 and 100 ng/ml insulin-like growth factors I but not with insulin-like growth factos II. Neither factor exerted a stimulatory effect on myometrial cells.Conclusion: Insulin-like growth factor sI preferentially stimulates leiomyoma cells in monolayer culture. These results suggest an autocrine-paracine role in vivo for this factor in conjuction with gonadal steroids in promoting leiomyoma growth.  相似文献   
4.
5.
6.
7.
8.
L. Ivanyi  T. Lehner    H. C. Burry 《Immunology》1973,25(5):905-908
Synovial fluid lymphocytes from patients with rheumatoid arthritis were effectively stimulated by B cell mitogens, such as pokeweed mitogen (PWM) and lipopolysaccharides (LPS), but their response to T cell mitogen, phytohaemagglutinin (PHA), was poor and no stimulation was observed in the presence of specific antigens, purified protein derivative (PPD) or Veillonella alcalescens sonicate.  相似文献   
9.
Two independent observers, one using haematological and the other histological methods, analysed material from 68 patients with acute leukaemia. A correct diagnosis of the cell type of leukaemia was made in 70% of cases by haematological methods, and in 83% of those cases histological examination gave the same result. In two-thirds of the haematologically equivocal cases histological examination provided a positive diagnosis. The finally undiagnosed cases amounted to 12% of the total. The types so diagnosed could not be correlated with any clinical features.  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