全文获取类型
收费全文 | 161063篇 |
免费 | 48548篇 |
国内免费 | 6047篇 |
专业分类
耳鼻咽喉 | 2202篇 |
儿科学 | 5249篇 |
妇产科学 | 1373篇 |
基础医学 | 24054篇 |
口腔科学 | 6604篇 |
临床医学 | 22410篇 |
内科学 | 33848篇 |
皮肤病学 | 8296篇 |
神经病学 | 16937篇 |
特种医学 | 5396篇 |
外国民族医学 | 30篇 |
外科学 | 22537篇 |
综合类 | 17198篇 |
现状与发展 | 23篇 |
一般理论 | 36篇 |
预防医学 | 10857篇 |
眼科学 | 3419篇 |
药学 | 14303篇 |
106篇 | |
中国医学 | 6989篇 |
肿瘤学 | 13791篇 |
出版年
2024年 | 319篇 |
2023年 | 1334篇 |
2022年 | 3125篇 |
2021年 | 5357篇 |
2020年 | 8123篇 |
2019年 | 13119篇 |
2018年 | 12581篇 |
2017年 | 13921篇 |
2016年 | 14334篇 |
2015年 | 15427篇 |
2014年 | 16236篇 |
2013年 | 16808篇 |
2012年 | 10704篇 |
2011年 | 11441篇 |
2010年 | 14103篇 |
2009年 | 9789篇 |
2008年 | 7341篇 |
2007年 | 6014篇 |
2006年 | 5863篇 |
2005年 | 4900篇 |
2004年 | 4072篇 |
2003年 | 3910篇 |
2002年 | 3565篇 |
2001年 | 2880篇 |
2000年 | 2432篇 |
1999年 | 1702篇 |
1998年 | 947篇 |
1997年 | 860篇 |
1996年 | 670篇 |
1995年 | 590篇 |
1994年 | 569篇 |
1993年 | 336篇 |
1992年 | 348篇 |
1991年 | 318篇 |
1990年 | 238篇 |
1989年 | 273篇 |
1988年 | 201篇 |
1987年 | 189篇 |
1986年 | 115篇 |
1985年 | 113篇 |
1984年 | 79篇 |
1983年 | 49篇 |
1982年 | 40篇 |
1981年 | 46篇 |
1980年 | 36篇 |
1979年 | 34篇 |
1978年 | 23篇 |
1977年 | 21篇 |
1975年 | 18篇 |
1974年 | 21篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
61.
62.
Xue Yao Yan Zhang Jian Hao Hui-Quan Duan Chen-Xi Zhao Chao Sun Bo Li Bao-You Fan Xu Wang Wen-Xiang Li Xuan-Hao Fu Yong Hu Chang Liu Xiao-Hong Kong Shi-Qing Feng 《中国神经再生研究》2019,(3)
Ferroptosis is an iron-dependent novel cell death pathway. Deferoxamine, a ferroptosis inhibitor, has been reported to promote spinal cord injury repair. It has yet to be clarified whether ferroptosis inhibition represents the mechanism of action of Deferoxamine on spinal cord injury recovery. A rat model of Deferoxamine at thoracic 10 segment was established using a modified Allen's method. Ninety 8-week-old female Wistar rats were used. Rats in the Deferoxamine group were intraperitoneally injected with 100 mg/kg Deferoxamine 30 minutes before injury. Simultaneously, the Sham and Deferoxamine groups served as controls. Drug administration was conducted for 7 consecutive days. The results were as follows:(1) Electron microscopy revealed shrunken mitochondria in the spinal cord injury group.(2) The Basso, Beattie and Bresnahan locomotor rating score showed that recovery of the hindlimb was remarkably better in the Deferoxamine group than in the spinal cord injury group.(3) The iron concentration was lower in the Deferoxamine group than in the spinal cord injury group after injury.(4) Western blot assay revealed that, compared with the spinal cord injury group, GPX4, xCT, and glutathione expression was markedly increased in the Deferoxamine group.(5) Real-time polymerase chain reaction revealed that, compared with the Deferoxamine group, mRNA levels of ferroptosis-related genes Acyl-CoA synthetase family member 2(ACSF2) and iron-responsive element-binding protein 2(IREB2) were up-regulated in the Deferoxamine group.(6) Deferoxamine increased survival of neurons and inhibited gliosis. These findings confirm that Deferoxamine can repair spinal cord injury by inhibiting ferroptosis. Targeting ferroptosis is therefore a promising therapeutic approach for spinal cord injury. 相似文献
63.
64.
Worsening pneumonitis due to a pharmacokinetic drug–drug interaction between everolimus and voriconazole in a renal transplant patient 下载免费PDF全文
65.
66.
Clinical usefulness of intraductal ultrasonography for the management of acute biliary pancreatitis 下载免费PDF全文
67.
68.
The association between family affluence and smoking among 15‐year‐old adolescents in 33 European countries,Israel and Canada: the role of national wealth 下载免费PDF全文
69.
Kota Sahara Rin Yamada Takashi Fujiwara Koichi Koizumi Shin‐ichiro Horiguchi Tsunekazu Hishima Tatsuro Yamaguchi 《Digestive endoscopy》2015,27(7):768-771
Idiopathic myointimal hyperplasia of mesenteric veins (IMHMV) is a rare and poorly understood ischemic colitis that occurs in the rectosigmoid colon of predominantly young, previously healthy, male patients. A 76‐year‐old Japanese man presented to our hospital with a 1‐year history of worsening diarrhea, lower abdominal pain, and weight loss (−6 kg). Laboratory evaluation revealed white blood cell count of 13 200/μL, C‐reactive protein level of 2.0 mg/dL (normal range, 0.0–0.3), and negative results for stool culture (including Clostridium difficile). Colonoscopy showed circumferential and edematous narrowing of the sigmoid colon with deep longitude ulceration. Biopsy was done and examination of the specimen demonstrated no specific ischemia. The patient was treated with bowel rest, antibiotics, and i.v. fluids; however, his symptoms worsened. Finally, sigmoidectomy was carried out. Histological examination demonstrated significant myointimal hyperplasia of mesenteric veins leading to thickening and stenosis of the venous lumen. Therefore, the final diagnosis was IMHMV. Three months following sigmoidectomy, he was asymptomatic. 相似文献
70.