全文获取类型
收费全文 | 979篇 |
免费 | 40篇 |
国内免费 | 8篇 |
专业分类
耳鼻咽喉 | 8篇 |
儿科学 | 21篇 |
妇产科学 | 10篇 |
基础医学 | 93篇 |
口腔科学 | 22篇 |
临床医学 | 100篇 |
内科学 | 170篇 |
皮肤病学 | 12篇 |
神经病学 | 155篇 |
特种医学 | 84篇 |
外科学 | 52篇 |
综合类 | 5篇 |
预防医学 | 81篇 |
眼科学 | 6篇 |
药学 | 145篇 |
肿瘤学 | 63篇 |
出版年
2022年 | 5篇 |
2021年 | 6篇 |
2020年 | 5篇 |
2019年 | 12篇 |
2018年 | 7篇 |
2017年 | 7篇 |
2016年 | 13篇 |
2015年 | 9篇 |
2014年 | 14篇 |
2013年 | 16篇 |
2012年 | 22篇 |
2011年 | 21篇 |
2010年 | 11篇 |
2009年 | 25篇 |
2008年 | 27篇 |
2007年 | 37篇 |
2006年 | 32篇 |
2005年 | 27篇 |
2004年 | 25篇 |
2003年 | 35篇 |
2002年 | 22篇 |
2001年 | 39篇 |
2000年 | 37篇 |
1999年 | 31篇 |
1998年 | 19篇 |
1997年 | 24篇 |
1996年 | 17篇 |
1995年 | 12篇 |
1994年 | 27篇 |
1993年 | 20篇 |
1992年 | 51篇 |
1991年 | 45篇 |
1990年 | 36篇 |
1989年 | 23篇 |
1988年 | 18篇 |
1987年 | 32篇 |
1986年 | 24篇 |
1985年 | 25篇 |
1984年 | 24篇 |
1983年 | 17篇 |
1982年 | 16篇 |
1981年 | 24篇 |
1980年 | 11篇 |
1979年 | 15篇 |
1978年 | 6篇 |
1977年 | 8篇 |
1976年 | 6篇 |
1971年 | 4篇 |
1967年 | 8篇 |
1966年 | 4篇 |
排序方式: 共有1027条查询结果,搜索用时 15 毫秒
1.
2.
3.
Günter Feuerstein 《Zeitschrift fur Gesundheitswissenschaften》1997,5(4):306-308
Ohne Zusammenfassung 相似文献
4.
Occurrence of the t(2;5)(p23;q35) in non-Hodgkin's lymphoma 总被引:9,自引:3,他引:6
Weisenburger DD; Gordon BG; Vose JM; Bast MA; Chan WC; Greiner TC; Anderson JR; Sanger WG 《Blood》1996,87(9):3860-3868
Primary CD30(Ki-1)-positive anaplastic large-cell lymphoma (ALCL) is considered by some to be a distinct clinicopathologic entity associated with the t(2;5) (p23;q35). However, the specificity of t(2;5) for ALCL has not been carefully studied. Therefore, we performed a detailed analysis of all cases of ALCL with abnormal cytogenetics results in the Nebraska Lymphoma Study Group registry, as well as all other cases of non-Hodgkin's lymphoma with t(2;5) in the registry. We found the t(2;5) in only five of 10 cases of ALCL, four of whom were young patients. However, we also found the t(2;5) in 11 other cases of nonanaplastic lymphoma, including eight children with typical peripheral T-cell lymphomas of various types. The t(2;5) was also found in three older adults with B-cell lymphomas of various types. Thus, the t(2;5) was not specific for CD30+ ALCL. However, t(2;5) may define a clinicopathologic entity in children and young adults characterized by variable morphologies with a T-cell or indeterminate phenotype, CD30-positivity, nodal disease with frequent extranodal involvement, advanced stage, and an excellent response to therapy, including bone marrow transplantation for relapsed disease. The clinical relevance of the t(2;5) in older patients requires further study. 相似文献
5.
6.
How thick is the glycocalyx of human erythrocytes?] 总被引:1,自引:0,他引:1
The aim of the experiment was to determine the thickness of the glycocalyx of human erythrocytes of the blood group A. For that purpose, the distance between the electron dense contrasted lipid layer of the plasmalemma and gold sol particles loaded with Helix pomatia lectin was determined. The mean thickness of the glycocalyx under this conditions was 5.9 nm. 相似文献
7.
E Shohami L Glantz J Nates G Feuerstein 《Journal of basic and clinical physiology and pharmacology》1992,3(2):99-107
Closed head injury in rats induces edema formation, which is indicated by a decrease in cerebral specific gravity and an increase in water content. We previously described the activation of the eicosanoid metabolic cascade, namely, activation of PLA2 and accumulation of products of both 5-lipoxygenase (5-LO) and cyclo-oxygenase (CO) in the same model of head injury. The present study was designed to determine the effect of a novel drug, SK&F 105809, a dual inhibitor of 5-LO and CO on cerebral edema formation after head injury in rats. Rats, under ether anesthesia, were subjected to sham operation or trauma induced by weight-drop device impacting over the left calvarium. One group of traumatized rats received 0.9% saline and served as control and two other groups were treated with SK&F 105809, 20 or 30 mg/kg, i.p. immediately after the impact. In one group treatment was repeated additionally 2.5 h post-trauma. Four hours after trauma, rats were sacrificed and brain edema was evaluated. SK&F 105809 treated rats which received 30 mg/kg had significantly less brain edema, as measured by both gravimetry and water content, at 4 h after trauma. The lower dose, 20 mg/kg, had no effect. Our results suggest that treatment with a mixed 5-LO/CO inhibitor shortly after head injury will result in less brain edema and ultimately improved functional outcome. 相似文献
8.
9.
Braffman BH; Coleman BG; Ramchandani P; Arger PH; Nodine CF; Dinsmore BJ; Louie A; Betsch SE 《Radiology》1994,190(3):797