全文获取类型
收费全文 | 30763篇 |
免费 | 2977篇 |
国内免费 | 118篇 |
专业分类
耳鼻咽喉 | 283篇 |
儿科学 | 1026篇 |
妇产科学 | 496篇 |
基础医学 | 4142篇 |
口腔科学 | 728篇 |
临床医学 | 3241篇 |
内科学 | 5933篇 |
皮肤病学 | 369篇 |
神经病学 | 3408篇 |
特种医学 | 968篇 |
外国民族医学 | 2篇 |
外科学 | 4289篇 |
综合类 | 624篇 |
一般理论 | 41篇 |
预防医学 | 3070篇 |
眼科学 | 976篇 |
药学 | 2331篇 |
1篇 | |
中国医学 | 62篇 |
肿瘤学 | 1868篇 |
出版年
2022年 | 165篇 |
2021年 | 517篇 |
2020年 | 332篇 |
2019年 | 521篇 |
2018年 | 566篇 |
2017年 | 509篇 |
2016年 | 523篇 |
2015年 | 614篇 |
2014年 | 853篇 |
2013年 | 1241篇 |
2012年 | 1850篇 |
2011年 | 2033篇 |
2010年 | 1058篇 |
2009年 | 914篇 |
2008年 | 1652篇 |
2007年 | 1744篇 |
2006年 | 1674篇 |
2005年 | 1677篇 |
2004年 | 1541篇 |
2003年 | 1506篇 |
2002年 | 1429篇 |
2001年 | 720篇 |
2000年 | 771篇 |
1999年 | 650篇 |
1998年 | 406篇 |
1997年 | 363篇 |
1996年 | 308篇 |
1995年 | 276篇 |
1994年 | 283篇 |
1993年 | 251篇 |
1992年 | 479篇 |
1991年 | 425篇 |
1990年 | 432篇 |
1989年 | 368篇 |
1988年 | 399篇 |
1987年 | 323篇 |
1986年 | 315篇 |
1985年 | 311篇 |
1984年 | 265篇 |
1983年 | 234篇 |
1982年 | 236篇 |
1981年 | 217篇 |
1980年 | 200篇 |
1979年 | 254篇 |
1978年 | 194篇 |
1977年 | 162篇 |
1976年 | 149篇 |
1974年 | 161篇 |
1973年 | 169篇 |
1972年 | 139篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
1.
2.
3.
There is a sharp difference in how one views TCR structure–function–behaviour dependent on whether its recognition of major histocompatibility complex‐encoded restriction elements (R) is germline selected or somatically generated. The generally accepted or Standard model is built on the assumption that recognition of R is by the V regions of the αβ TCR, which is not driven by allele specificity, whereas the competing model posits that recognition of R is allele‐specific. The establishing of allele‐specific recognition of R by the TCR would rule out the Standard model and clear the road to a consideration of a competing construct, the Tritope model. Here, the case for allele‐specific recognition (germline selected) is detailed making it obvious that the Standard model is untenable. 相似文献
4.
5.
6.
Wai Man Mandy Chan Yik Weng Yew Thiam Seng Colin Theng Choon Fong Liew Hazel H Oon 《Singapore medical journal》2020,61(4):194
INTRODUCTIONPsoriasis is a chronic inflammatory condition that affects the skin and joints, and is associated with cardiovascular risk factors, including metabolic syndrome (MetS). We aimed to assess the prevalence of MetS in patients with psoriasis and determine whether there was a correlation between psoriasis severity and MetS in a Singapore population.METHODSThis was a cross-sectional study of patients with psoriasis, aged 18–69 years, who attended a tertiary dermatology referral centre in Singapore from October 2007 to February 2009. Fasting glucose, lipids, blood pressure, Psoriasis Area and Severity Index, and body mass index were measured. MetS was diagnosed in the presence of three or more criteria of the modified National Cholesterol Education Program Adult Treatment Panel III.RESULTSAmong 338 patients with psoriasis, there were 238 (70.4%) men and 100 (29.6%) women, who were Chinese (n = 228; 67.5%), Malay (n = 52; 15.4%) and Indian (n = 58; 17.2%). The prevalence of MetS was 45.1%. MetS was 44% more prevalent in patients older than 50 years (p = 0.02). Malay patients with psoriasis were significantly more likely to have hypertriglyceridaemia, elevated fasting plasma glucose and abdominal obesity. There was no significant correlation between psoriasis severity and risk of MetS.CONCLUSIONThe prevalence of MetS in patients with psoriasis in Singapore was 45.1%, or nearly threefold higher than the Singapore general population. Patients with psoriasis should be screened yearly for MetS and any modifiable cardiovascular risk factors should be actively controlled. 相似文献
7.
8.
Tselios Konstantinos Yap Kristy Su-Ying Pakchotanon Rattapol Polachek Ari Su Jiandong Urowitz Murray B. Gladman Dafna D. 《Clinical rheumatology》2019,38(1):269-269
Clinical Rheumatology - Prof. Ari Polachek on of the author of the published version of this article missed to add his second affiliation which is the Department of Rheumatology, Tel Aviv Sourasky... 相似文献
9.
10.