全文获取类型
收费全文 | 63330篇 |
免费 | 4575篇 |
国内免费 | 334篇 |
专业分类
耳鼻咽喉 | 635篇 |
儿科学 | 1602篇 |
妇产科学 | 1539篇 |
基础医学 | 7844篇 |
口腔科学 | 1537篇 |
临床医学 | 6358篇 |
内科学 | 14385篇 |
皮肤病学 | 809篇 |
神经病学 | 5001篇 |
特种医学 | 1916篇 |
外国民族医学 | 2篇 |
外科学 | 9741篇 |
综合类 | 1010篇 |
现状与发展 | 1篇 |
一般理论 | 103篇 |
预防医学 | 5254篇 |
眼科学 | 1858篇 |
药学 | 4428篇 |
中国医学 | 140篇 |
肿瘤学 | 4076篇 |
出版年
2023年 | 292篇 |
2022年 | 463篇 |
2021年 | 1158篇 |
2020年 | 724篇 |
2019年 | 1010篇 |
2018年 | 1244篇 |
2017年 | 848篇 |
2016年 | 968篇 |
2015年 | 1136篇 |
2014年 | 1774篇 |
2013年 | 2809篇 |
2012年 | 3774篇 |
2011年 | 4115篇 |
2010年 | 2346篇 |
2009年 | 2192篇 |
2008年 | 4009篇 |
2007年 | 4193篇 |
2006年 | 4020篇 |
2005年 | 4115篇 |
2004年 | 3842篇 |
2003年 | 3455篇 |
2002年 | 3415篇 |
2001年 | 730篇 |
2000年 | 623篇 |
1999年 | 722篇 |
1998年 | 742篇 |
1997年 | 610篇 |
1996年 | 492篇 |
1995年 | 491篇 |
1994年 | 466篇 |
1993年 | 440篇 |
1992年 | 531篇 |
1991年 | 509篇 |
1990年 | 417篇 |
1989年 | 438篇 |
1988年 | 396篇 |
1987年 | 373篇 |
1986年 | 355篇 |
1985年 | 419篇 |
1984年 | 432篇 |
1983年 | 394篇 |
1982年 | 528篇 |
1981年 | 443篇 |
1980年 | 485篇 |
1979年 | 301篇 |
1978年 | 321篇 |
1977年 | 321篇 |
1976年 | 261篇 |
1975年 | 287篇 |
1974年 | 246篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
991.
Vladimir Carli Peter Parzer Camilla Wasserman Birgitta Floderus Alan Apter Judit Balazs Shira Barzilay Julio Bobes Romuald Brunner Paul Corcoran Doina Cosman Padraig Cotter Romain Despalins Nadja Graber Francis Guillemin Christian Haring Jean‐Pierre Kahn Laura Mandelli Dragan Marusic Gergely Mészáros George J. Musa Vita Postuvan Franz Resch Pilar A. Saiz Merike Sisask Airi Varnik Marco Sarchiapone Christina W. Hoven Danuta Wasserman 《Addiction (Abingdon, England)》2012,107(12):2210-2222
992.
993.
994.
995.
996.
998.
George D. Rovere Anthony G. Gristina William A. Stolzer 《The Physician and sportsmedicine》2013,41(7):51-52
In brief: Marian's syndrome has gained increased attention and interest recently, more so since the death of volleyball star Flo Hyman last January. The disorder was first described by French pediatrician Antoine Bernard-Jean Marfan in 1896, although it may not have been the same syndrome as we know it today. Current thought suggests a defect in collagen—the fibrous material found in bones, joints, eyes, heart, and blood vessels. Positive diagnosis requires the presence of at least two of four major features: a positive family history and ocular, cardiac, and skeletal abnormalities. This article reviews the disease and discusses methods of detection and management. 相似文献
999.
Elaine Maria Seles Dorneles Ana Paula Paiva de Faria Rebeca Barbosa Pauletti Jordana Almeida Santana George Afonso Vítor Caldeira Marcos Bryan Heinemann Ricardo Titze-de-Almeida Andrey Pereira Lage 《Vaccine》2013
The aims of the present study were (i) to assess the in vitro genetic stability of S19 and RB51 Brucella abortus vaccines strains and (ii) to evaluate the ability of multiple-locus variable-number tandem repeat (VNTR) analysis (MLVA) as a tool to be used in the quality control of live vaccines against brucellosis. Sixty-three batches of commercial S19 (n = 53) and RB51 (n = 10) vaccines, produced between 2006 and 2009, were used in this study. S19 and RB51 vaccines were obtained from, respectively, seven and two different manufacturers. Ten in vitro serial passages were performed on reference strains and on selected batches of commercial vaccines. All batches, reference strains and strains of serial passages were typed by the MLVA16. The results demonstrated that B. abortus S19 and RB51 vaccine strains are genetically stable and very homogeneous in their respective groups. Anyway, batches of S19 from one manufacturer and batches of RB51 from another presented genotypes distincts from the reference vaccine strains. In both cases, differences were found on locus Bruce07, which had addition of one repeat unit in the case of S19 batches and the deletion of one repeat unit in the case of RB51 batches. In summary, MLVA16 proved to be a molecular tool capable of discriminating small genomic variations and should be included in in vitro official tests. 相似文献
1000.
Adil A. Shah Umar F. Bhatti Mikael Petrosyan George Washington Wasay Nizam Mallory Williams Daniel Tran Edward E. Cornwell Terrence M. Fullum 《American journal of surgery》2019,217(4):732-738