全文获取类型
收费全文 | 555141篇 |
免费 | 33370篇 |
国内免费 | 983篇 |
专业分类
耳鼻咽喉 | 7301篇 |
儿科学 | 18176篇 |
妇产科学 | 15740篇 |
基础医学 | 82036篇 |
口腔科学 | 17564篇 |
临床医学 | 44287篇 |
内科学 | 110799篇 |
皮肤病学 | 11866篇 |
神经病学 | 44083篇 |
特种医学 | 20584篇 |
外国民族医学 | 78篇 |
外科学 | 78922篇 |
综合类 | 9546篇 |
现状与发展 | 2篇 |
一般理论 | 313篇 |
预防医学 | 48529篇 |
眼科学 | 11571篇 |
药学 | 36390篇 |
中国医学 | 1640篇 |
肿瘤学 | 30067篇 |
出版年
2022年 | 3516篇 |
2021年 | 7140篇 |
2020年 | 4741篇 |
2019年 | 7054篇 |
2018年 | 10056篇 |
2017年 | 7674篇 |
2016年 | 8057篇 |
2015年 | 9186篇 |
2014年 | 12421篇 |
2013年 | 17327篇 |
2012年 | 24708篇 |
2011年 | 25754篇 |
2010年 | 14448篇 |
2009年 | 13419篇 |
2008年 | 21943篇 |
2007年 | 23518篇 |
2006年 | 22521篇 |
2005年 | 22160篇 |
2004年 | 20656篇 |
2003年 | 19276篇 |
2002年 | 16653篇 |
2001年 | 21354篇 |
2000年 | 21598篇 |
1999年 | 18504篇 |
1998年 | 5739篇 |
1997年 | 5037篇 |
1996年 | 4910篇 |
1995年 | 4463篇 |
1994年 | 4204篇 |
1993年 | 3902篇 |
1992年 | 12952篇 |
1991年 | 12712篇 |
1990年 | 12272篇 |
1989年 | 11901篇 |
1988年 | 10823篇 |
1987年 | 10281篇 |
1986年 | 9719篇 |
1985年 | 9394篇 |
1984年 | 6828篇 |
1983年 | 5839篇 |
1982年 | 3424篇 |
1979年 | 6015篇 |
1978年 | 4238篇 |
1977年 | 3534篇 |
1975年 | 3651篇 |
1974年 | 4231篇 |
1973年 | 4228篇 |
1972年 | 3876篇 |
1971年 | 3662篇 |
1970年 | 3505篇 |
排序方式: 共有10000条查询结果,搜索用时 0 毫秒
1.
Michels Guido Horn Rudolf Helfen Andreas Hagendorff Andreas Jung Christian Hoffmann Beatrice Jaspers Natalie Kinkel Horst Greim Clemens-Alexander Knebel Fabian Bauersachs Johann Busch Hans-Jörg Kiefl Daniel Spiel Alexander O. Marx Gernot Dietrich Christoph F. 《Der Anaesthesist》2022,71(4):307-310
Die Anaesthesiologie - 相似文献
2.
3.
4.
Two Janus-associated kinase inhibitors (JAKi) (initially ruxolitinib and, more recently, fedratinib) have been approved as treatment options for patients who have intermediate-risk and high-risk myelofibrosis (MF), with pivotal trials demonstrating improvements in spleen volume, disease symptoms, and quality of life. At the same time, however, clinical trial experiences with JAKi agents in MF have demonstrated a high frequency of discontinuations because of adverse events or progressive disease. In addition, overall survival benefits and clinical and molecular predictors of response have not been established in this population, for which the disease burden is high and treatment options are limited. Consistently poor outcomes have been documented after JAKi discontinuation, with survival durations after ruxolitinib ranging from 11 to 16 months across several studies. To address such a high unmet therapeutic need, various non-JAKi agents are being actively explored (in combination with ruxolitinib in first-line or salvage settings and/or as monotherapy in JAKi-pretreated patients) in phase 3 clinical trials, including pelabresib (a bromodomain and extraterminal domain inhibitor), navitoclax (a B-cell lymphoma 2/B-cell lymphoma 2-xL inhibitor), parsaclisib (a phosphoinositide 3-kinase inhibitor), navtemadlin (formerly KRT-232; a murine double-minute chromosome 2 inhibitor), and imetelstat (a telomerase inhibitor). The breadth of data expected from these trials will provide insight into the ability of non-JAKi treatments to modify the natural history of MF. 相似文献
5.
6.
7.
8.
9.
10.
Selwyn Arlington Headley Nayara Emily Viana Mariana de Mello Zanim Michelazzo Ana Aparecida Correa Xavier Cícero Júlio Silva Costa Felipe Hideki Ogo de Pinho Marcelo Diniz dos Santos 《Transboundary and Emerging Diseases》2020,67(Z2):49-59
Neorickettsia helminthoeca (NH), the agent of salmon poisoning disease or canine neorickettiosis (CN), is a bacterial endosymbiont of the nematode Nanophyetus salmincola, and infections are spreading among specific fish‐eating mammalians. This article describes the pathologic and immunohistochemical findings associated with spontaneous NH‐induced infections in dogs from Southern Brazil. The principal pathologic findings were hypertrophy of Peyer patches and lymphadenopathy with lymphocytic proliferation, chronic interstitial pneumonia, and chronic enteritis associated with positive intralesional immunoreactivity to antigens of NH within macrophages and histiocytes. Positive immunoreactivity against canine parvovirus‐2 (CPV‐2) or/and canine distemper virus was not detected in the evaluated intestinal segments or in the samples from the cerebellum and lungs, respectively, from the dogs evaluated. These findings demonstrated that NH was involved in the enteric, pulmonary, and lymphoid lesions herein described, and provide additional information to confirm the occurrence of this bacterial endosymbiont within this geographical location. It is proposed that chronic pneumonia should be considered as a pathologic manifestation of NH‐induced infections. Additionally, our results show that the occurrences of CN seem to be underdiagnosed in Southern Brazil due to the confusion with the incidence of CPV‐2. 相似文献