全文获取类型
收费全文 | 23113篇 |
免费 | 2000篇 |
国内免费 | 51篇 |
专业分类
耳鼻咽喉 | 515篇 |
儿科学 | 642篇 |
妇产科学 | 394篇 |
基础医学 | 2837篇 |
口腔科学 | 334篇 |
临床医学 | 2933篇 |
内科学 | 4371篇 |
皮肤病学 | 447篇 |
神经病学 | 2034篇 |
特种医学 | 1007篇 |
外科学 | 3702篇 |
综合类 | 458篇 |
现状与发展 | 20篇 |
一般理论 | 20篇 |
预防医学 | 2048篇 |
眼科学 | 450篇 |
药学 | 1445篇 |
中国医学 | 16篇 |
肿瘤学 | 1491篇 |
出版年
2023年 | 268篇 |
2022年 | 327篇 |
2021年 | 936篇 |
2020年 | 557篇 |
2019年 | 843篇 |
2018年 | 1008篇 |
2017年 | 642篇 |
2016年 | 637篇 |
2015年 | 716篇 |
2014年 | 970篇 |
2013年 | 1484篇 |
2012年 | 1697篇 |
2011年 | 1617篇 |
2010年 | 896篇 |
2009年 | 761篇 |
2008年 | 1137篇 |
2007年 | 1144篇 |
2006年 | 1012篇 |
2005年 | 857篇 |
2004年 | 865篇 |
2003年 | 665篇 |
2002年 | 622篇 |
2001年 | 382篇 |
2000年 | 424篇 |
1999年 | 354篇 |
1998年 | 174篇 |
1997年 | 154篇 |
1996年 | 152篇 |
1995年 | 122篇 |
1994年 | 105篇 |
1993年 | 110篇 |
1992年 | 261篇 |
1991年 | 222篇 |
1990年 | 228篇 |
1989年 | 236篇 |
1988年 | 234篇 |
1987年 | 205篇 |
1986年 | 264篇 |
1985年 | 178篇 |
1984年 | 155篇 |
1983年 | 129篇 |
1982年 | 97篇 |
1981年 | 88篇 |
1980年 | 91篇 |
1979年 | 157篇 |
1978年 | 105篇 |
1977年 | 73篇 |
1976年 | 81篇 |
1975年 | 82篇 |
1971年 | 78篇 |
排序方式: 共有10000条查询结果,搜索用时 46 毫秒
991.
992.
993.
Michael A. Jhung Tiffany D'Mello Alejandro Pérez Deborah Aragon Nancy M. Bennett Tara Cooper Monica M. Farley Brian Fowler Stephen M. Grube Emily B. Hancock Ruth Lynfield Craig Morin Arthur Reingold Patricia Ryan William Schaffner Ruta Sharangpani Leslie Tengelsen Ann Thomas Diana Thurston Kimberly Yousey-Hindes Shelley Zansky Lyn Finelli Sandra S. Chaves 《American journal of infection control》2014
994.
995.
996.
Toby A. Eyre Lindsey E. Roeker Christopher P. Fox Satyen H. Gohill Renata Walewska Harriet S. Walter Francesco Forconi Angus Broom Arvind Arumainathan Danielle M. Brander John N. Allan Stephen J. Schuster Brian T. Hill Frederick Lansigan Bruce D. Cheson Nicole Lamanna Catherine C. Coombs Paul M. Barr Alan P. Skarbnik Mazyar Shadman Chaitra S. Ujjani Laurie Pearson John M. Pagel Ryan Jacobs Anthony R. Mato 《British journal of haematology》2020,188(6):918-923
Elderly chronic lymphocytic leukaemia (CLL) patients treated outside of trials have notably greater toxicity with the Bruton's tyrosine kinase inhibitor ibrutinib compared to younger patients. It is not known whether the same holds true for the B-cell lymphoma 2 inhibitor venetoclax. We provide a comprehensive analysis of key safety measures and efficacy in 342 patients comparing age categories ≥75 and <75 years treated in the relapsed, refractory non-trial setting. We demonstrate that venetoclax has equivalent efficacy and safety in relapsed/refractory CLL patients who are elderly, the majority of whom are previous ibrutinib-exposed and therefore may otherwise have few clear therapeutic options. 相似文献
997.
Stephen D. Smith Brian G. Till Mazyar S. Shadman Ryan C. Lynch Andrew J. Cowan Qian V. Wu Jenna Voutsinas Heather A. Rasmussen Katherine Blue Chaitra S. Ujjani Andrei Shustov Ryan D. Cassaday Jonathan R. Fromm Ajay K. Gopal 《British journal of haematology》2020,189(6):1119-1126
Tumor programmed death-ligand 1 (PD-L1) expression in diffuse large B-cell lymphoma (DLBCL) is associated with inferior outcomes. The first-line immunologically-replete setting may be an opportune time for PD-1 inhibition. We evaluated pembrolizumab in combination with R-CHOP (rituximab, cyclophosphamide, doxorubicin, vincristine, and prednisone) in untreated patients with DLBCL. Eligible patients were age 18 or older, had adequate organ function, and had DLBCL requiring full-course therapy. Patients received pembrolizumab 200 mg/cycle with R-CHOP, primarily to assess toxicity. Response assessment utilized standard criteria, and PD-L1 staining was performed at a validated central laboratory. Among 30 patients, toxicity was comparable to standard R-CHOP but with two grade ≥3 immune related adverse events (rash, pneumonitis). The overall and complete response rate was 90% and 77%. With 25·5 months of median follow-up, 2-year progression-free survival (PFS) is 83%. PD-L1 expression was associated with non-GCB subtype, and improved PFS and survival. Pembrolizumab can safely be added to R-CHOP, and is associated with a high CR rate and 2-year PFS. Improved PFS with PR-CHOP in PD-L1 expressing tumors contradicts historical data in R-CHOP treated patients, supporting evaluation of PD-L1 as a biomarker to identify DLBCL patients who may benefit from this first-line strategy. 相似文献
998.
999.
1000.
Mateusz Konczal Amy R. Ellison Karl P. Phillips Jacek Radwan Ryan S. Mohammed Joanne Cable Magdalena Chadzinska 《Parasite immunology》2020,42(12):e12782
Gyrodactylids are ubiquitous ectoparasites of teleost fish, but our understanding of the host immune response against them is fragmentary. Here, we used RNA-Seq to investigate genes involved in the primary response to infection with Gyrodactylus bullatarudis on the skin of guppies, Poecilia reticulata, an important evolutionary model, but also one of the most common fish in the global ornamental trade. Analysis of differentially expressed genes identified several immune-related categories, including IL-17 signalling pathway and Th17 cell differentiation, cytokine-cytokine receptor interaction, chemokine signalling pathway, NOD-like receptor signalling pathway, natural killer cell-mediated cytotoxicity and pathways involved in antigen recognition, processing and presentation. Components of both the innate and the adaptive immune responses play a role in response to gyrodactylid infection. Genes involved in IL-17/Th17 response were particularly enriched among differentially expressed genes, suggesting a significant role for this pathway in fish responses to ectoparasites. Our results revealed a sizable list of genes potentially involved in the teleost-gyrodactylid immune response. 相似文献