全文获取类型
收费全文 | 1692411篇 |
免费 | 126451篇 |
国内免费 | 3777篇 |
专业分类
耳鼻咽喉 | 21730篇 |
儿科学 | 55634篇 |
妇产科学 | 46151篇 |
基础医学 | 241205篇 |
口腔科学 | 48736篇 |
临床医学 | 151301篇 |
内科学 | 333482篇 |
皮肤病学 | 38651篇 |
神经病学 | 131134篇 |
特种医学 | 63868篇 |
外国民族医学 | 242篇 |
外科学 | 257219篇 |
综合类 | 38945篇 |
现状与发展 | 4篇 |
一般理论 | 531篇 |
预防医学 | 124223篇 |
眼科学 | 40211篇 |
药学 | 123592篇 |
7篇 | |
中国医学 | 4475篇 |
肿瘤学 | 101298篇 |
出版年
2021年 | 12782篇 |
2019年 | 13521篇 |
2018年 | 19950篇 |
2017年 | 15213篇 |
2016年 | 16613篇 |
2015年 | 18957篇 |
2014年 | 26212篇 |
2013年 | 37940篇 |
2012年 | 52724篇 |
2011年 | 55415篇 |
2010年 | 32769篇 |
2009年 | 30691篇 |
2008年 | 51514篇 |
2007年 | 54793篇 |
2006年 | 55252篇 |
2005年 | 52535篇 |
2004年 | 50737篇 |
2003年 | 48147篇 |
2002年 | 46366篇 |
2001年 | 91782篇 |
2000年 | 93605篇 |
1999年 | 76959篇 |
1998年 | 19717篇 |
1997年 | 17267篇 |
1996年 | 17391篇 |
1995年 | 16742篇 |
1994年 | 15289篇 |
1993年 | 14071篇 |
1992年 | 57381篇 |
1991年 | 55270篇 |
1990年 | 52970篇 |
1989年 | 50747篇 |
1988年 | 46131篇 |
1987年 | 44937篇 |
1986年 | 42227篇 |
1985年 | 39987篇 |
1984年 | 29348篇 |
1983年 | 24908篇 |
1982年 | 13899篇 |
1979年 | 25529篇 |
1978年 | 17574篇 |
1977年 | 14906篇 |
1976年 | 13874篇 |
1975年 | 14563篇 |
1974年 | 17630篇 |
1973年 | 16944篇 |
1972年 | 15673篇 |
1971年 | 14453篇 |
1970年 | 13431篇 |
1969年 | 12517篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
111.
112.
R. Foley P. Kelly S. Gatault F. Powell 《Journal of the European Academy of Dermatology and Venereology》2021,35(1):62-72
Demodex mites are microscopic arachnids found in the normal skin of many mammals. In humans, it is well established that Demodex mite density is higher in patients with the skin condition rosacea, and treatment with acaricidal agents is effective in resolving symptoms. However, pathophysiology of rosacea is complex and multifactorial. In dogs, demodicosis is a significant veterinary issue, particularly the generalized form of the disease which can be fatal if untreated. In each species, clinical and molecular studies have shown that the host’s immunological interactions with Demodex mites are an important, but not fully understood, aspect of how Demodex can live in the skin either as a harmless commensal organism or as a pathogenic agent. This review outlines the role of Demodex mites in humans and dogs, considering morphology, prevalence, symptoms, diagnosis, histology treatment and pathogenesis. 相似文献
113.
114.
115.
116.
Anders Elm Pedersen Esben Gjerløff Wedebye Schmidt Jesper Freddie Sørensen Carsten Faber Boye Schnack Nielsen Kim Holmstrøm Silje Haukali Omland Peter Tougaard Søren Skov Bo Bang 《APMIS : acta pathologica, microbiologica, et immunologica Scandinavica》2015,123(7):547-555
TL1A is a TNF‐like cytokine which has been shown to co‐stimulate TH1 and TH17 responses during chronic inflammation. The expression of this novel cytokine has been investigated in inflammatory disorders like rheumatoid arthritis and inflammatory bowel disease, but little is known about expression and induction in psoriasis. Indeed, the pathogenesis in psoriasis is still not fully understood and it is speculated that cytokines other than TNF‐α are important in subsets of patients. Also, for patients with severe disease that are treated with systemic anti‐TNF‐α blockade, novel candidates to be used as disease and response biomarkers are of high interest. Here, we demonstrate TL1A expression in biopsies from psoriatic lesions. Also, we investigated spontaneous and induced TL1A secretion from PBMCs and blood levels from a cohort of psoriasis patients. Here, increased spontaneous secretion from PBMCs was observed as compared to healthy controls and a small subset of patients had highly elevated TL1A in the blood. Interestingly, activation of PBMCs with various cytokines showed a decreased sensitivity for TL1A activation in psoriasis patients compared to healthy controls.TL1A levels in blood and biopsies could not be correlated with disease activity with this patient cohort. Thus, additional large‐scale studies are warranted to investigate TL1A as a biomarker. 相似文献
117.
Iclea Rocha Gama Euclides Marinho Trindade-Filho Suzana Lima Oliveira Nassib Bezerra Bueno Isabelle Tenório Melo Cyro Rego Cabral-Junior Elenita M. Barros Jaqueline A. Galvão Wanessa S. Pereira Raphaela C. Ferreira Bruna R. Domingos Terezinha da Rocha Ataide 《Metabolic brain disease》2015,30(1):93-98
118.
119.