全文获取类型
收费全文 | 7965篇 |
免费 | 642篇 |
国内免费 | 19篇 |
专业分类
耳鼻咽喉 | 81篇 |
儿科学 | 283篇 |
妇产科学 | 143篇 |
基础医学 | 1438篇 |
口腔科学 | 282篇 |
临床医学 | 697篇 |
内科学 | 1641篇 |
皮肤病学 | 90篇 |
神经病学 | 506篇 |
特种医学 | 286篇 |
外科学 | 1183篇 |
综合类 | 51篇 |
一般理论 | 2篇 |
预防医学 | 551篇 |
眼科学 | 58篇 |
药学 | 840篇 |
中国医学 | 9篇 |
肿瘤学 | 485篇 |
出版年
2022年 | 51篇 |
2021年 | 83篇 |
2020年 | 76篇 |
2019年 | 94篇 |
2018年 | 121篇 |
2017年 | 131篇 |
2016年 | 104篇 |
2015年 | 144篇 |
2014年 | 169篇 |
2013年 | 286篇 |
2012年 | 347篇 |
2011年 | 376篇 |
2010年 | 240篇 |
2009年 | 214篇 |
2008年 | 337篇 |
2007年 | 339篇 |
2006年 | 350篇 |
2005年 | 309篇 |
2004年 | 282篇 |
2003年 | 286篇 |
2002年 | 283篇 |
2001年 | 257篇 |
2000年 | 304篇 |
1999年 | 264篇 |
1998年 | 117篇 |
1997年 | 124篇 |
1996年 | 93篇 |
1995年 | 119篇 |
1994年 | 99篇 |
1993年 | 104篇 |
1992年 | 225篇 |
1991年 | 214篇 |
1990年 | 224篇 |
1989年 | 204篇 |
1988年 | 166篇 |
1987年 | 185篇 |
1986年 | 156篇 |
1985年 | 132篇 |
1984年 | 117篇 |
1983年 | 104篇 |
1982年 | 72篇 |
1981年 | 69篇 |
1980年 | 51篇 |
1979年 | 90篇 |
1978年 | 83篇 |
1977年 | 60篇 |
1976年 | 52篇 |
1974年 | 52篇 |
1973年 | 41篇 |
1972年 | 41篇 |
排序方式: 共有8626条查询结果,搜索用时 15 毫秒
1.
2.
3.
D Gröne† R Treudler† EM de Villiers‡ R Husak† CE Orfanos† ChC Zouboulis†§ 《Journal of the European Academy of Dermatology and Venereology》2006,20(2):202-205
Cidofovir is an acyclic nucleoside phosphonate with broad-spectrum activity against DNA viruses, including human papilloma virus (HPV). However, data on the efficacy of cidofovir in an immunosuppressive setting remain contradictory. We report for the first time on the promotion of the healing of recalcitrant warts in a patient with myelodysplastic syndrome with intravenous cidofovir treatment. 相似文献
4.
Olle Zetterström Christer Andersson Leif Eriksson ers Fredriksson Johan Friskopp Gunnar Heden Bernt Jansson Tord Lundgren Rolf Nilveus ers Olsson Stefan Renvert Lars Salonen Lars Sjöström ers Winell ers Östgren Stina Gestrelius 《Journal of clinical periodontology》1997,24(9):697-704
Abstract The aim of the present clinical trial was to test tolerability during 2 treatments with EMDOGAIN® in a large number of patients. An open, controlled study design in 10 Swedish specialist clinics was chosen, with a test group of 107 patients treated with EMDOGAIN® in connection with periodontal surgery at 2 surgical test sites per patient. The procedures were performed 2 to 6 weeks apart on one-rooted teeth with at least 4 mm deep intraosseous lesions. A control group of 33 patients underwent flap surgery without EMDOGAIN® at I comparable site. In total 214 test and 33 control surgeries were performed. Serum samples were obtained from test patients for analysis of total and specific antibody levels. 10 of the patients had samples taken before and after the first surgery. 56 other samples were taken after one treatment with EMDOGAIN®, and 63 after 2 treatments. None of the samples, not even from allergy-prone patients after 2 treatments, indicated deviations from established baseline ranges. This indicates that the immunogenic potential of EMDOGAIN® is extremely low when applied in conjunction with periodontal surgery. Comparison between the test and control groups demonstrated the same type and frequency of post-surgical experiences, i.e., reactions caused by the surgical procedure itself. Clinical probing and radiographic evaluation was performed at baseline and 8 months postsurgery. About half of the patients (44 test and 21 control) were also evaluated after 3 years. There was a significant difference between the test and control results at 8 months post surgery. and this difference had increased further at the 3 year follow-up. The 2.5–3 mm increase in attachment and bone level after treatment with EMDOGAIN® was of the same magnitude as seen in the studies with split-mouth design aiming for lest of effectiveness of EMDOGAIN®. 相似文献
5.
6.
Different psychotropic drugs were investigated in order to determine their effect on the release of prolactin and corticosterone and their influence on the tuberoinfundibular dopamine (TIDA) neuron activity. The results were used in a principal component analysis, which grouped the psychotropic drugs into different clusters. In the plot showing these clusters the anxiolytic drugs were found to be grouped together and differ from the antidepressant drugs by their potent ability to increase plasma corticosterone. The antipsychotic drugs formed a separate group being clustered together. Typical neuroleptic and atypical antipsychotic drugs could be separated within the cluster by their different effects on plasma prolactin and corticosterone and on TIDA neuron activity. The results indicate that the neuroendocrine profiles of antidepressant and anxiolytic drugs are different from those of antipsychotic drugs and that the neuroendocrine measurements could be a useful tool in the early classification of psychotropic drugs. © 1993 Wiley-Liss, Inc. 相似文献
7.
Compromise of immune function in obstructive jaundice. 总被引:5,自引:0,他引:5
8.
Karl-Erik Andersson 《The Journal of urology》2009,181(4):1525-1527
9.
10.