全文获取类型
收费全文 | 2026篇 |
免费 | 102篇 |
国内免费 | 10篇 |
专业分类
耳鼻咽喉 | 26篇 |
儿科学 | 26篇 |
妇产科学 | 45篇 |
基础医学 | 285篇 |
口腔科学 | 24篇 |
临床医学 | 122篇 |
内科学 | 429篇 |
皮肤病学 | 11篇 |
神经病学 | 79篇 |
特种医学 | 65篇 |
外科学 | 400篇 |
综合类 | 9篇 |
预防医学 | 77篇 |
眼科学 | 102篇 |
药学 | 116篇 |
中国医学 | 1篇 |
肿瘤学 | 321篇 |
出版年
2024年 | 3篇 |
2023年 | 21篇 |
2022年 | 34篇 |
2021年 | 67篇 |
2020年 | 24篇 |
2019年 | 36篇 |
2018年 | 73篇 |
2017年 | 41篇 |
2016年 | 63篇 |
2015年 | 62篇 |
2014年 | 74篇 |
2013年 | 75篇 |
2012年 | 144篇 |
2011年 | 154篇 |
2010年 | 93篇 |
2009年 | 62篇 |
2008年 | 108篇 |
2007年 | 132篇 |
2006年 | 155篇 |
2005年 | 127篇 |
2004年 | 130篇 |
2003年 | 103篇 |
2002年 | 91篇 |
2001年 | 25篇 |
2000年 | 14篇 |
1999年 | 20篇 |
1998年 | 31篇 |
1997年 | 20篇 |
1996年 | 14篇 |
1995年 | 12篇 |
1994年 | 11篇 |
1993年 | 10篇 |
1992年 | 12篇 |
1991年 | 8篇 |
1990年 | 12篇 |
1989年 | 12篇 |
1988年 | 6篇 |
1987年 | 6篇 |
1986年 | 9篇 |
1985年 | 12篇 |
1984年 | 6篇 |
1983年 | 5篇 |
1982年 | 2篇 |
1981年 | 2篇 |
1980年 | 2篇 |
1979年 | 2篇 |
1978年 | 4篇 |
1977年 | 2篇 |
1976年 | 2篇 |
1972年 | 2篇 |
排序方式: 共有2138条查询结果,搜索用时 15 毫秒
21.
Fumio Ide Yumi Ito Kentaro Kikuchi Kazuhito Satomura Ikuko Ogawa Hidetaka Yamamoto 《Pathology international》2021,71(12):844-848
Inverted ductal papilloma (IDP) is one of the least common benign papillary/cystic neoplasms of the salivary duct system, being characterized histologically by florid hyperplasia of duct-type epithelial cells into a cystic lumen near the orifice with occasional endophytic growth of the surface squamous epithelium along the terminus of the affected excretory duct. Given its rarity, the exact etiology of IDP remains to be defined. We herein present the first evidence of oncogenic HRAS mutation in a case of oral IDP. This finding, together with the frequent and specific BRAF mutations in sialadenoma papilliferum reported in the recent literature, supports an active role of the MAP-kinase cascade in the pathogenesis of benign papillary neoplasms of terminal duct origin. 相似文献
22.
Hazim O. Khalifa Teppei Arai Hidetaka Majima Akira Watanabe Katsuhiko Kamei 《Journal of infection and chemotherapy》2021,27(6):834-839
IntroductionInfections with Candida glabrata have recently gained worldwide attention owing to its association with long hospitalizations and high mortality rates. This problem is highlighted when the infection is associated with echinocandin resistance, which is used for first-line therapy. Echinocandin resistance is exclusively attributed to functional mutations in FKS genes, and especially in hot spot (HS) regions. Unfortunately, few studies have focused on the rapid identification of FKS mutations associated with echinocandin resistance in C. glabrata. This study was intended to evaluate and validate the use of Surveyor nuclease assay (SN) for detection of FKS gene mutations.MethodsSN was evaluated against three segments of FKS1 and FKS2 genes including whole gene, regions including all HSs, and the region including only HS1.ResultsOur results showed that SN results are basically dependent on the type of gene as well as the segment type. Interestingly, SN can detect mutations in the region containing HS1 in both FKS1 and FKS2 genes. Furthermore, SN can detect mutations in the segment containing all HS regions for FKS1 but not FKS2. SN was unable to detect mutations in the whole FKS1 and FKS2 genes.ConclusionsAs far as we know, this is the first study to validate SN for rapid identification of FKS gene mutations. This assay could be used as a sample for rapid identification of mutations associated with HS1 region in FKS genes, which have a predominant role for echinocandin resistance induction in C. glabrata. 相似文献
23.
Pig kidney graft survival in a baboon for 136 days: longest life‐supporting organ graft survival to date 下载免费PDF全文
Martin Wijkstrom Huidong Zhou Jagjit Singh Hidetaka Hara Mohamed Ezzelarab Cassandra Long Edwin Klein Robert Wagner Carol Phelps David Ayares Ron Shapiro Abhinav Humar David K. C. Cooper 《Xenotransplantation》2015,22(4):302-309
The longest survival of a non‐human primate with a life‐supporting kidney graft to date has been 90 days, although graft survival > 30 days has been unusual. A baboon received a kidney graft from an α‐1,3‐galactosyltransferase gene‐knockout pig transgenic for two human complement‐regulatory proteins and three human coagulation‐regulatory proteins (although only one was expressed in the kidney). Immunosuppressive therapy was with ATG+anti‐CD20mAb (induction) and anti‐CD40mAb+rapamycin+corticosteroids (maintenance). Anti‐TNF‐α and anti‐IL‐6R were administered. The baboon survived 136 days with a generally stable serum creatinine (0.6 to 1.6 mg/dl) until termination. No features of a consumptive coagulopathy (e.g., thrombocytopenia, decreased fibrinogen) or of a protein‐losing nephropathy were observed. There was no evidence of an elicited anti‐pig antibody response. Death was from septic shock (Myroides spp). Histology of a biopsy on day 103 was normal, but by day 136, the kidney showed features of glomerular enlargement, thrombi, and mesangial expansion. The combination of (i) a graft from a specific genetically engineered pig, (ii) an effective immunosuppressive regimen, and (iii) anti‐inflammatory agents prevented immune injury and a protein‐losing nephropathy, and delayed coagulation dysfunction. This outcome encourages us that clinical renal xenotransplantation may become a reality. 相似文献
24.
25.
26.
Hidetaka Imagita Akira Nishikawa Susumu Sakata Yasue Nishii Akira Minematsu Hideki Moriyama Naohiko Kanemura Hanae Shindo 《Journal of Physical Therapy Science》2015,27(3):791-794
[Purpose] The purpose of this study was to make an experimental model of cervical spinal
cord injury (CSCI) using Wistar rats, in order to analyze the influence of CSCI on the
respiratory function. [Subjects] Thirty-two male 12-week-old Wistar rats were used.
[Methods] The CSCI was made at the levels from C3 to C7, and we performed
pneumotachography and electromyography (EMG) on the diaphragm. Computed tomography was
used to determine the level of spinal cord damage. [Results] After the operation, the
tidal volume of the rats with a C3 level injury decreased to approximately 22.3% of its
pre-injury value. In addition, in the same rats, the diaphragmatic electromyogram activity
decreased remarkably. Compared with before CSCI, the tidal volume decreased to 78.6% of
its pre-injury value in CSCI at the C5 level, and it decreased to 94.1% of its pre-injury
value in CSCI at the C7 level. [Conclusion] In the rats that sustained a CSCI in this
study, the group of respiratory muscles that receive innervation from the thoracic spinal
cord was paralyzed. Therefore, the EMG signal of the diaphragm increased. These results
demonstrate that there is a relationship between respiratory function and the level of
CSCI.Key words: Cervical spinal cord injury, Respiratory function, Electromyography of diaphragm muscle 相似文献
27.
28.
Fujii W Kohno M Ishino H Nakabayashi A Fujioka K Kida T Nagahara H Murakami K Nakamura K Seno T Yamamoto A Kawahito Y 《Modern rheumatology / the Japan Rheumatism Association》2012,22(4):630-634
We report a case of rheumatoid vasculitis (RV) that responded well to abatacept, a cytotoxic T lymphocyte-associated antigen 4 (CTLA4)-immunoglobulin fusion protein. A 38-year-old woman developed RV despite treatment with methotrexate and tumor necrosis factor (TNF) inhibitors. The effects of steroid therapy, immunoabsorption plasmapheresis, and interleukin-6 inhibitor were insufficient, however, administration of abatacept rapidly improved her clinical symptoms with almost normalization of the immunological findings. This is the first published case report of the successful treatment of RV with abatacept. 相似文献
29.
30.
Masashi Sakamoto Izumi Yoshi Takahiro Sodeno Kenichirou Aso Ryuya Hashimoto Hidetaka Masahar Takatoshi Maeno 《国际眼科杂志》2021,21(1):15-20
目的:研究并探讨Baerveldt青光眼植入术(BGI)的不同植入部位对眼压(IOP)的影响。方法:对日本Toho大学Sakura医疗中心接受BGI治疗的新生血管性青光眼的病例进行回顾性分析。所有患者分为两组:颞上植入组(16例患者18眼,其中男性13例,女性3例;平均年龄62.9±14.4岁)和鼻下植入组(15例患者17眼,其中男性11例,女性4例;平均年龄56.9±10.7岁)。术后12mo随访复查。比较两组术后12mo与术前相比的眼压降低率。结果:颞上植入组:术前平均IOP为31.1±10.0 mmHg,术后平均IOP为14.4±4.5 mmHg;鼻下植入组:术前平均IOP为34.9±9.7 mmHg,术后平均IOP为15.9±3.7 mmHg。颞上植入组IOP降低率为(50.0±19.0)%,鼻下植入组降低率为(51.2±16.3)%。两组间无显著统计学差异(t-test,P=0.590)。结论:经睫状体平坦部行颞上或鼻下BGI的短期临床疗效无差异。 相似文献