全文获取类型
收费全文 | 1805篇 |
免费 | 293篇 |
国内免费 | 39篇 |
专业分类
耳鼻咽喉 | 13篇 |
儿科学 | 107篇 |
妇产科学 | 19篇 |
基础医学 | 112篇 |
口腔科学 | 28篇 |
临床医学 | 294篇 |
内科学 | 596篇 |
皮肤病学 | 61篇 |
神经病学 | 178篇 |
特种医学 | 283篇 |
外科学 | 208篇 |
综合类 | 31篇 |
预防医学 | 63篇 |
眼科学 | 19篇 |
药学 | 66篇 |
中国医学 | 1篇 |
肿瘤学 | 58篇 |
出版年
2024年 | 9篇 |
2023年 | 52篇 |
2022年 | 22篇 |
2021年 | 31篇 |
2020年 | 95篇 |
2019年 | 15篇 |
2018年 | 88篇 |
2017年 | 71篇 |
2016年 | 70篇 |
2015年 | 68篇 |
2014年 | 95篇 |
2013年 | 115篇 |
2012年 | 54篇 |
2011年 | 45篇 |
2010年 | 80篇 |
2009年 | 115篇 |
2008年 | 46篇 |
2007年 | 50篇 |
2006年 | 48篇 |
2005年 | 33篇 |
2004年 | 17篇 |
2003年 | 13篇 |
2002年 | 16篇 |
2001年 | 33篇 |
2000年 | 14篇 |
1999年 | 28篇 |
1998年 | 80篇 |
1997年 | 97篇 |
1996年 | 78篇 |
1995年 | 69篇 |
1994年 | 49篇 |
1993年 | 52篇 |
1992年 | 27篇 |
1991年 | 15篇 |
1990年 | 25篇 |
1989年 | 52篇 |
1988年 | 43篇 |
1987年 | 29篇 |
1986年 | 21篇 |
1985年 | 21篇 |
1984年 | 16篇 |
1983年 | 9篇 |
1982年 | 14篇 |
1981年 | 14篇 |
1980年 | 14篇 |
1979年 | 8篇 |
1978年 | 8篇 |
1977年 | 10篇 |
1976年 | 10篇 |
1971年 | 8篇 |
排序方式: 共有2137条查询结果,搜索用时 3 毫秒
891.
Maura Malpetti PhD P. Simon Jones PhD Thomas E. Cope MD PhD Negin Holland MD PhD Michelle Naessens MSc Matthew A. Rouse MSc Timothy Rittman MD PhD George Savulich PhD David J. Whiteside MD Duncan Street MD PhD Tim D. Fryer PhD Young T. Hong PhD Selena Milicevic Sephton PhD Franklin I. Aigbirhio DPhil John T. O′Brien FRCPsych DM James B. Rowe FRCP PhD 《Annals of neurology》2023,93(1):142-154
892.
Sudheer Ambekar MBBS Chandrajit Prasad DM Srinivas Dwarakanath MCh Anitha Mahadevan MD 《Journal of neuroimaging》2013,23(1):149-151
Cerebral coenurosis due to Taenia multiceps is a rare infection with no case reports from India. A 55‐year‐old male patient had presented with progressive symptoms of hemiparesis of 1‐year duration. Magnetic resonance imaging (MRI) with magnetic resonance spectroscopy (MRS) of the lesion was performed that showed a septated cystic lesion in left parieto‐occipital lobe. Multivoxel MRS through the lesion was performed using repetition time of 1500 ms and time to echo of 144 ms at 3T MRI. MRS showed mildly elevated choline (Cho), depressed creatine (Cr), and N‐acetyl aspartate (NAA), a large peak of lactate, pyruvate, and acetate peaks. To best of our knowledge, there has been no reported case of in vivo proton MRS finding ever reported. We present MRS findings in this operatively proven case of T. multiceps cyst of the brain. 相似文献
893.
894.
Sergej Nowoshilow Ji-Feng Fei S. Randal Voss Elly M. Tanaka Prayag Murawala 《Developmental dynamics》2022,251(6):913-921
The laboratory axolotl (Ambystoma mexicanum) is widely used in biological research. Recent advancements in genetic and molecular toolkits are greatly accelerating the work using axolotl, especially in the area of tissue regeneration. At this juncture, there is a critical need to establish gene and transgenic nomenclature to ensure uniformity in axolotl research. Here, we propose guidelines for genetic nomenclature when working with the axolotl. 相似文献
895.
Joanna Wilson MRes Alison J. Yarnall FRCP PhD Chesney E. Craig PhD Brook Galna PhD Sue Lord PhD Rosie Morris PhD Rachael A. Lawson PhD Lisa Alcock PhD Gordon W. Duncan FRCP PhD Tien K. Khoo FRCP PhD John T. O'Brien DM FMedSci David J. Burn FRCP MD John-Paul Taylor MBBS PhD MRCPscyh Nicola J. Ray PhD Lynn Rochester PhD 《Movement disorders》2021,36(3):611-621
896.
897.
898.
899.
Vickram Vignesh Rangaswamy MD DM Daljeet Kaur Saggu MD DM Krishnamraju Penmetcha MD DM FRCP Sachin Yalagudri MD DM Narasimhan Calambur MD DM 《Echocardiography (Mount Kisco, N.Y.)》2020,37(9):1473-1477
We present an unusual intracardiac mass posing a diagnostic dilemma. A middle-aged male patient was referred for workup of a symptomatic cardiac mass involving the mitral valve. Multimodality imaging consisting of cardiac magnetic resonance (CMR) imaging and 18F-fluorodeoxyglucose positron emission computerized tomography (18FDG-PET) scan was utilized to further characterize the mass after initial echocardiographic identification. CMR imaging identified extent of valvular mass into the interatrial septum and basal portion of the interventricular septum. On 18FDG-PET scan, the intracardiac mass was found to be metabolically active. It also revealed the presence of FDG avid lymph nodes in the abdomen. Histology of the lymph node revealed active granulomatous inflammation suggestive of tuberculosis. Treatment with antitubercular therapy resulted in resolution of the mass and mitral regurgitation, avoiding surgery. 相似文献
900.
Ashwal Adamane Jayaram MD DM Abdul Razak Uddina Kumeri MD DM Sudhakar M Rao MD DM Aakash Tuli MBBS Krishnananda Nayak MSc PHD 《Echocardiography (Mount Kisco, N.Y.)》2020,37(10):1694-1697
Double interatrial septum is an extremely rare congenital anomaly which forms a distinguished midline interatrial chamber between the two atria. The objective of this case report is to highlight this unusual anomaly and to discuss the potential complications of this condition. We report the case of a 6-year-old asymptomatic child who underwent cardiac evaluation for a soft systolic murmur eventually being diagnosed with double interatrial septum. 相似文献