全文获取类型
收费全文 | 15997篇 |
免费 | 1098篇 |
国内免费 | 309篇 |
专业分类
耳鼻咽喉 | 284篇 |
儿科学 | 255篇 |
妇产科学 | 249篇 |
基础医学 | 2538篇 |
口腔科学 | 278篇 |
临床医学 | 1271篇 |
内科学 | 3245篇 |
皮肤病学 | 439篇 |
神经病学 | 1185篇 |
特种医学 | 933篇 |
外国民族医学 | 1篇 |
外科学 | 2162篇 |
综合类 | 330篇 |
一般理论 | 5篇 |
预防医学 | 590篇 |
眼科学 | 314篇 |
药学 | 1616篇 |
中国医学 | 277篇 |
肿瘤学 | 1432篇 |
出版年
2024年 | 8篇 |
2023年 | 84篇 |
2022年 | 268篇 |
2021年 | 559篇 |
2020年 | 307篇 |
2019年 | 449篇 |
2018年 | 536篇 |
2017年 | 448篇 |
2016年 | 615篇 |
2015年 | 828篇 |
2014年 | 935篇 |
2013年 | 1032篇 |
2012年 | 1561篇 |
2011年 | 1486篇 |
2010年 | 889篇 |
2009年 | 673篇 |
2008年 | 945篇 |
2007年 | 911篇 |
2006年 | 798篇 |
2005年 | 749篇 |
2004年 | 659篇 |
2003年 | 607篇 |
2002年 | 561篇 |
2001年 | 242篇 |
2000年 | 193篇 |
1999年 | 171篇 |
1998年 | 117篇 |
1997年 | 79篇 |
1996年 | 61篇 |
1995年 | 50篇 |
1994年 | 51篇 |
1993年 | 39篇 |
1992年 | 66篇 |
1991年 | 48篇 |
1990年 | 45篇 |
1989年 | 41篇 |
1988年 | 31篇 |
1987年 | 30篇 |
1986年 | 19篇 |
1985年 | 25篇 |
1984年 | 14篇 |
1983年 | 18篇 |
1982年 | 11篇 |
1981年 | 17篇 |
1980年 | 11篇 |
1979年 | 11篇 |
1974年 | 11篇 |
1971年 | 10篇 |
1969年 | 10篇 |
1968年 | 16篇 |
排序方式: 共有10000条查询结果,搜索用时 482 毫秒
1.
Hyun Jong Choi Jong Ho Moon Yun Nah Lee Hyun Su Kim Ji Su Ha Tae Hoon Lee Sang‐Woo Cha Young Deok Cho Sang‐Heum Park 《Digestive endoscopy》2015,27(7):772-775
Direct peroral cholangioscopy (POC) using an ultra‐slim upper endoscope is one modality of POC for intraductal endoscopic evaluation and treatment of the bile duct. Choledochoduodenostomy (CDS) is one modality of biliary bypass surgery that provides a new route to the bile duct. We carried out direct POC using an ultra‐slim upper endoscope without the use of accessories in 10 patients (four sump syndromes, three bile duct strictures and three intrahepatic duct stones) previously undergoing surgical CDS. Direct POC was successful in all patients. The use of an intraductal balloon catheter was required in one patient for advancement of the endoscope into the bile duct. Distal bile ducts with sump syndromes were cleared using baskets and water irrigation under direct POC. Cholangiocarcinoma was diagnosed in one patient with hilar bile duct stricture after cholangioscopic evaluation and a targeting forceps biopsy under direct POC. Intrahepatic duct stones were successfully extracted after intraductal fragmentation under direct POC. Oozing bleeding occurred during intraductal lithotripsy but stopped spontaneously. Direct POC using an ultra‐slim upper endoscope without the assistance of accessories can easily be carried out in patients undergoing CDS. 相似文献
2.
3.
4.
Yeon Seok Lee June Hyunkyung Lee Jae Eun Choi Joo Young Kim Tae Young Han 《Pediatric dermatology》2021,38(1):290-291
Erythema induratum of Bazin (EIB) is a form of tuberculid resulting from hypersensitivity to tuberculosis antigen. EIB occurs most commonly in middle‐aged women and is not typically seen in children. Here, we present a rare case of EIB, presenting as a chronic nodular panniculitis, in a 10‐year‐old Korean boy. 相似文献
5.
6.
Clinical usefulness of intraductal ultrasonography for the management of acute biliary pancreatitis
下载免费PDF全文
![点击此处可从《Journal of gastroenterology and hepatology》网站下载免费的PDF全文](/ch/ext_images/free.gif)
7.
Hae June Lee Yeonghoon Son Minyoung Lee Changjong Moon Sung Ho Kim In Sik Shin Miyoung Yang Sangwoo Bae Joong Sun Kim 《中国神经再生研究》2019,(9)
Sodium butyrate is a histone deacetylase inhibitor that affects various types of brain damages. To investigate the effects of sodium butyrate on hippocampal dysfunction that occurs after whole-brain irradiation in animal models and the effect of sodium butyrate on radiation exposure-induced cognitive impairments,adult C57BL/6 mice were intraperitoneally treated with 0.6 g/kg sodium butyrate before exposure to 10 Gy cranial irradiation. Cognitive impairment in adult C57BL/6 mice was evaluated via an object recognition test 30 days after irradiation. We also detected the expression levels of neurogenic cell markers(doublecortin)and phosphorylated cAMP response element binding protein/brain-derived neurotrophic factor. Radiation-exposed mice had decreased cognitive function and hippocampal doublecortin and phosphorylated cAMP response element binding protein/brain-derived neurotrophic factor expression. Sodium butyrate pretreatment reversed these changes. These findings suggest that sodium butyrate can improve radiation-induced cognitive dysfunction through inhibiting the decrease in hippocampal phosphorylated cAMP response element binding protein/brain-derived neurotrophic factor expression. The study procedures were approved by the Institutional Animal Care and Use Committee of Korea Institute of Radiological Medical Sciences(approval No. KIRAMS16-0002) on December 30, 2016. 相似文献
8.
9.
据悉,国家发改委已经将《药品定价方法》意见征求稿(初稿)下发各制药行业协会,这是发改委在行政干预药品价格历程中第一个比较全面的政府药价管理指导性文件。纳入政府定价范围的2400个药品品种的定价将遵循这一原则。又有报道,新的药品降价政策将于2006年上半年出台。这次降价 相似文献
10.
目的:在原核系统中表达并纯化大肠杆菌胞嘧啶脱氨酶(cytosine deaminase,CD),制备鼠抗大肠杆菌CD多克隆抗体,方法:亚克隆CD基因到原核表达载体pMAL-c2和pBV222中,并转化入大肠杆菌DH5α内,诱导表达并纯化MBP-CD和6his-CD融合蛋白,用纯化的MBP-CD融合蛋白免疫小鼠制备多克隆抗体。结果:通过重组质粒的酶切筛选出重组阳性克隆,成功地表达和纯化出MBP-CD和6his-CD融合蛋白,用纯化的MBP-CD成功制备了鼠抗CD多克隆抗体,并用6his-CD和GST-CD重组蛋白进行Western印迹分析,证实了抗体的正确性,结论:应用多克隆抗体可以检测体内外CD基因的表达,为临床前和临床上深入开展CD基因的生物治疗研究提供重要的实验材料。 相似文献