全文获取类型
收费全文 | 2659720篇 |
免费 | 183616篇 |
国内免费 | 3561篇 |
专业分类
耳鼻咽喉 | 35442篇 |
儿科学 | 86833篇 |
妇产科学 | 68820篇 |
基础医学 | 385960篇 |
口腔科学 | 69283篇 |
临床医学 | 235377篇 |
内科学 | 515063篇 |
皮肤病学 | 56023篇 |
神经病学 | 215326篇 |
特种医学 | 102399篇 |
外国民族医学 | 490篇 |
外科学 | 404395篇 |
综合类 | 50999篇 |
现状与发展 | 12篇 |
一般理论 | 938篇 |
预防医学 | 207699篇 |
眼科学 | 60077篇 |
药学 | 193900篇 |
11篇 | |
中国医学 | 5409篇 |
肿瘤学 | 152441篇 |
出版年
2021年 | 20996篇 |
2019年 | 21640篇 |
2018年 | 50306篇 |
2017年 | 38901篇 |
2016年 | 44569篇 |
2015年 | 29776篇 |
2014年 | 40766篇 |
2013年 | 60925篇 |
2012年 | 89664篇 |
2011年 | 107788篇 |
2010年 | 68981篇 |
2009年 | 59049篇 |
2008年 | 101888篇 |
2007年 | 109950篇 |
2006年 | 90086篇 |
2005年 | 89273篇 |
2004年 | 86836篇 |
2003年 | 85318篇 |
2002年 | 80637篇 |
2001年 | 112638篇 |
2000年 | 116289篇 |
1999年 | 96377篇 |
1998年 | 28675篇 |
1997年 | 25160篇 |
1996年 | 25164篇 |
1995年 | 23685篇 |
1994年 | 21845篇 |
1993年 | 20602篇 |
1992年 | 72773篇 |
1991年 | 70809篇 |
1990年 | 69100篇 |
1989年 | 66317篇 |
1988年 | 60890篇 |
1987年 | 59759篇 |
1986年 | 55767篇 |
1985年 | 53761篇 |
1984年 | 40031篇 |
1983年 | 34008篇 |
1982年 | 20571篇 |
1979年 | 36417篇 |
1978年 | 26128篇 |
1977年 | 21685篇 |
1976年 | 20785篇 |
1975年 | 22222篇 |
1974年 | 26554篇 |
1973年 | 25143篇 |
1972年 | 23455篇 |
1971年 | 22324篇 |
1970年 | 20547篇 |
1969年 | 19575篇 |
排序方式: 共有10000条查询结果,搜索用时 0 毫秒
91.
92.
93.
94.
95.
Zaida Araujo Sietze Brandes Elena Pinelli María A. Bochichio Andrea Palacios Albina Wide Bruno Rivas-Santiago Juan Carlos Jiménez 《Revista do Instituto de Medicina Tropical de S?o Paulo》2015,57(1):47-55
The present study aimed at measuring seropositivities for infection by
Ascaris suum and Toxocara canis using the
excretory/secretory (E/S) antigens from Ascaris suum (AES) and
Toxocara canis (TES) within an indigenous population. In
addition, quantification of cytokine expressions in peripheral blood cells was
determined. A total of 50 Warao indigenous were included; of which 43 were adults and
seven children. In adults, 44.1% were seropositive for both parasites; whereas
children had only seropositivity to one or the other helminth. For ascariosis, the
percentage of AES seropositivity in adults and children was high; 23.3% and 57.1%,
respectively. While that for toxocariosis, the percentage of TES seropositivity in
adults and children was low; 9.3% and 14.3%, respectively. The percentage of
seronegativity was comparable for AES and TES antigens in adults (27.9%) and children
(28.6%). When positive sera were analyzed by Western blotting technique using AES
antigens; three bands of 97.2, 193.6 and 200.2 kDas were mostly recognized. When the
TES antigens were used, nine major bands were mostly identified; 47.4, 52.2, 84.9,
98.2, 119.1, 131.3, 175.6, 184.4 and 193.6 kDas. Stool examinations showed that
Blastocystis hominis, Hymenolepis nana and
Entamoeba coli were the most commonly observed intestinal
parasites. Quantification of cytokines IFN-γ, IL-2, IL-6, TGF-β, TNF-α, IL-10 and
IL-4 expressions showed that there was only a significant increased expression of
IL-4 in indigenous with TES seropositivity (p < 0.002).
Ascaris and Toxocara seropositivity was
prevalent among Warao indigenous. 相似文献
96.
97.
Discordant Electrocardiogram Left Ventricular Wall Thickness and Strain Findings in Influenza Myocarditis
下载免费PDF全文
![点击此处可从《Echocardiography (Mount Kisco, N.Y.)》网站下载免费的PDF全文](/ch/ext_images/free.gif)
Nael Hawwa M.D. Zoran B. Popovic M.D. Ph.D. Hussain A. Isma'eel M.D. 《Echocardiography (Mount Kisco, N.Y.)》2015,32(12):1880-1884
A 42‐year‐old man presented with a viral prodrome and tested positive for influenza A. He rapidly deteriorated developing cardiogenic shock, rhabdomyolysis, and acute kidney injury. Patient improved 1 week later with supportive measures including vasopressors, inotropes, and an intraaortic balloon pump. We report this case as it highlights the discordance between echocardiographic ventricular wall thickening as a result of myocardial edema, and electrocardiographic findings at presentation, with a reversal in findings at time of resolution. Additionally, there was some suggestion of a regional pattern to the reduced longitudinal strain. 相似文献
98.
99.
100.