全文获取类型
收费全文 | 65849篇 |
免费 | 6423篇 |
国内免费 | 166篇 |
学科分类
医药卫生 | 72438篇 |
出版年
2021年 | 1009篇 |
2020年 | 737篇 |
2019年 | 1305篇 |
2018年 | 1486篇 |
2017年 | 1243篇 |
2016年 | 1223篇 |
2015年 | 1446篇 |
2014年 | 1910篇 |
2013年 | 2780篇 |
2012年 | 3549篇 |
2011年 | 3842篇 |
2010年 | 2266篇 |
2009年 | 2051篇 |
2008年 | 3359篇 |
2007年 | 3565篇 |
2006年 | 3462篇 |
2005年 | 3422篇 |
2004年 | 3213篇 |
2003年 | 3198篇 |
2002年 | 3272篇 |
2001年 | 1449篇 |
2000年 | 1440篇 |
1999年 | 1316篇 |
1998年 | 745篇 |
1997年 | 690篇 |
1996年 | 639篇 |
1995年 | 625篇 |
1994年 | 566篇 |
1993年 | 536篇 |
1992年 | 1086篇 |
1991年 | 1107篇 |
1990年 | 987篇 |
1989年 | 906篇 |
1988年 | 826篇 |
1987年 | 846篇 |
1986年 | 837篇 |
1985年 | 812篇 |
1984年 | 693篇 |
1983年 | 541篇 |
1982年 | 506篇 |
1981年 | 451篇 |
1980年 | 403篇 |
1979年 | 629篇 |
1978年 | 426篇 |
1977年 | 349篇 |
1976年 | 352篇 |
1975年 | 378篇 |
1974年 | 415篇 |
1973年 | 352篇 |
1972年 | 340篇 |
排序方式: 共有10000条查询结果,搜索用时 625 毫秒
1.
Evelyne Harkemanne Jean‐Louis Dargent Pierre‐Paul Roquet‐Gravy Audrey Bulinckx 《Pediatric dermatology》2019,36(3):365-367
We report a case of benign lymphoplasmacytic plaque (LPP) in a child. These asymptomatic erythematous papulonodular lesions are an emerging clinicopathological entity. Herein, we describe a previously unreported site for LPP lesions, namely, the volar wrist and the distal ipsilateral palm. 相似文献
2.
Jean‐Franois Etter 《Addiction (Abingdon, England)》2019,114(12):2252-2256
3.
There is a sharp difference in how one views TCR structure–function–behaviour dependent on whether its recognition of major histocompatibility complex‐encoded restriction elements (R) is germline selected or somatically generated. The generally accepted or Standard model is built on the assumption that recognition of R is by the V regions of the αβ TCR, which is not driven by allele specificity, whereas the competing model posits that recognition of R is allele‐specific. The establishing of allele‐specific recognition of R by the TCR would rule out the Standard model and clear the road to a consideration of a competing construct, the Tritope model. Here, the case for allele‐specific recognition (germline selected) is detailed making it obvious that the Standard model is untenable. 相似文献
4.
5.
6.
7.
Sarah E. Sheppard Laura Elizabeth Anderson Cathryn Sibbald Colleen Cotton Elizabeth Bhoj Marissa J. Perman Leslie Castelo‐Soccio 《Pediatric dermatology》2019,36(6):1007-1009
Epidermolysis bullosa simplex (EBS) is a skin fragility disorder resulting from mutations of structural proteins in the epidermis. We provide a brief report of long‐term survival and reproduction in a mother with EBS due to keratin 5 (KRT5) c.1429G > A (p.E477K) mutation, which causes a particularly severe form of the disease. 相似文献
8.
9.
The National DMEFP Conference Team which consists of the following authors Charlene M. Dewey Teri L. Turner Linda Perkowski Jean Bailey Larry D. Gruppen 《Medical teacher》2016,38(2):141-149
Medical education fellowship programs (MEFPs) are a form of faculty development contributing to an organization’s educational mission and participants’ career development. Building an MEFP requires a systematic design, implementation, and evaluation approach which aligns institutional and individual faculty goals. Implementing an MEFP requires a team of committed individuals who provide expertise, guidance, and mentoring. Qualified MEFP directors should utilize instructional methods that promote individual and institutional short and long term growth. Directors must balance the use of traditional design, implementation, and evaluation methodologies with advancing trends that may support or threaten the acceptability and sustainability of the program. Drawing on the expertise of 28 MEFP directors, we provide twelve tips as a guide to those implementing, sustaining, and/or growing a successful MEFP whose value is demonstrated by its impacts on participants, learners, patients, teaching faculty, institutions, the greater medical education community, and the population’s health. 相似文献
10.