全文获取类型
收费全文 | 10250篇 |
免费 | 771篇 |
国内免费 | 21篇 |
专业分类
耳鼻咽喉 | 46篇 |
儿科学 | 425篇 |
妇产科学 | 244篇 |
基础医学 | 1381篇 |
口腔科学 | 70篇 |
临床医学 | 1754篇 |
内科学 | 1890篇 |
皮肤病学 | 68篇 |
神经病学 | 880篇 |
特种医学 | 160篇 |
外科学 | 841篇 |
综合类 | 118篇 |
一般理论 | 29篇 |
预防医学 | 1307篇 |
眼科学 | 207篇 |
药学 | 685篇 |
中国医学 | 21篇 |
肿瘤学 | 916篇 |
出版年
2024年 | 12篇 |
2023年 | 105篇 |
2022年 | 137篇 |
2021年 | 234篇 |
2020年 | 204篇 |
2019年 | 277篇 |
2018年 | 279篇 |
2017年 | 225篇 |
2016年 | 258篇 |
2015年 | 250篇 |
2014年 | 340篇 |
2013年 | 530篇 |
2012年 | 814篇 |
2011年 | 835篇 |
2010年 | 446篇 |
2009年 | 402篇 |
2008年 | 721篇 |
2007年 | 749篇 |
2006年 | 727篇 |
2005年 | 681篇 |
2004年 | 614篇 |
2003年 | 543篇 |
2002年 | 544篇 |
2001年 | 69篇 |
2000年 | 43篇 |
1999年 | 89篇 |
1998年 | 115篇 |
1997年 | 87篇 |
1996年 | 93篇 |
1995年 | 86篇 |
1994年 | 57篇 |
1993年 | 58篇 |
1992年 | 33篇 |
1991年 | 38篇 |
1990年 | 31篇 |
1989年 | 23篇 |
1988年 | 33篇 |
1987年 | 23篇 |
1986年 | 18篇 |
1985年 | 24篇 |
1984年 | 22篇 |
1983年 | 22篇 |
1982年 | 20篇 |
1981年 | 26篇 |
1980年 | 26篇 |
1979年 | 11篇 |
1978年 | 12篇 |
1977年 | 7篇 |
1975年 | 9篇 |
1974年 | 8篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
11.
Successful immune reconstitution decreases leukemic relapse and improves survival in recipients of unrelated cord blood transplantation. 总被引:3,自引:0,他引:3
Robertson Parkman Geoff Cohen Shelly L Carter Kenneth I Weinberg Bernadette Masinsin Eva Guinan Joanne Kurtzberg John E Wagner Nancy A Kernan 《Biology of blood and marrow transplantation》2006,12(9):919-927
Allogeneic hematopoietic stem cell transplantation (HSCT) is established therapy for selected patients with acute leukemia. After transplantation, antileukemic immune responses are believed to eliminate residual leukemia cells and decrease the likelihood of relapse. However, the clinical effect of successful antigen-specific immune reconstitution after HSCT on the likelihood of leukemic relapse and overall survival is not known. Pediatric recipients of unrelated cord blood transplants who underwent transplantation for acute leukemia were sequentially evaluated for their development of antigen-specific T-lymphocyte immunity to herpes viruses. The clinical effect of a positive antigen-specific response on relapse-free survival was determined. The presence of an antigen-specific response resulted in a relapse-free survival advantage (P = .0001), which was primarily due to a decrease in leukemic relapse (P = .003). Proportional hazards modeling for time to relapse and time to relapse or death defined 3 variables that were strongly associated with a poor outcome: female gender, poor remission status before transplantation, and negative antigen-specific T-lymphocyte proliferation. Notably neither acute nor chronic graft-versus-host disease had any effect on the incidence of leukemic relapse. Successful antigen-specific immune reconstitution after unrelated cord blood transplantation results in decreased leukemic relapse and improved overall survival. 相似文献
12.
13.
This paper examines the use of videotape simulation as a research method for the exploration of clinical problem-solving, the challenges posed and the strategies employed to overcome the difficulties encountered are discussed. The simulation forms part of a larger comparative study of outcomes of pre-registration nurse education programmes, commissioned by the English National Board for Nursing, Midwifery and Health Visiting. 相似文献
14.
15.
16.
Alan J. Lewis Janet Parker Joanne Diluigi Louis J. Datko Richard P. Carlson 《Immunopharmacology and immunotoxicology》1981,3(3):289-308
Delayed hypersensitivity (DH) was induced in the footpads of mice sensitized to methylated bovine serum albumin (MBSA). The magnitude of this DH response increased with increasing sensitizing concentration of MBSA. Levamisole administered 1 hr prior to MBSA challenge stimulated the DH response and this was optimal using subliminal sensitizing concentrations of antigen. A number of antirheumatic agents, immunomodulators mediator antagonists and antiallergies were subsequently examined using the subliminal sensitizing concentration of MBSA. The same drugs were also evaluated using a normal sensitizing procedure. These studies indicate that the sensitizing concentration of antigen is critical in establishing whether a drug will stimulate or suppress a DH response. 相似文献
17.
18.
19.
Lee Stewart Kim Usher Rigieta Nadakuitavuki Joanne Tollefson 《The Australian journal of advanced nursing》2006,23(4):47-51
BACKGROUND: Nurse leaders in Fiji are currently involved in meeting the challenges of being at the forefront of an AusAID supported Health Sector Improvement process. Fiji is experiencing the same shortages of health professionals (including nurses) as is occurring internationally, while simultaneously striving to improve the quality of its health services. PRIMARY ARGUMENT: This paper provides information about the current situation in relation to health services in Fiji, and describes strategies being undertaken by the nurse leaders of Fiji to meet the challenge of leading an exciting reform process. James Cook University, School of Nursing Sciences, has been privileged to support the provision of contemporary leadership and management education for current and future nurse leaders in the Fiji Health Sector as a component of a current education program to educate registered nurses to bachelor level. This paper will provide an overview of the current Fiji Health Sector Improvement Program, with a particular focus on the preparation of nurse leaders. CONCLUSION: There is an ongoing need to understand beliefs and values, and styles of interaction and communication, and indeed, ideas about time. With collaboration between Australian academics and Fiji tutors from the Fiji School of Nursing, the program appears to be remarkably successful. 相似文献
20.