全文获取类型
收费全文 | 958篇 |
免费 | 178篇 |
国内免费 | 16篇 |
专业分类
耳鼻咽喉 | 2篇 |
儿科学 | 2篇 |
妇产科学 | 8篇 |
基础医学 | 72篇 |
口腔科学 | 1篇 |
临床医学 | 21篇 |
内科学 | 32篇 |
皮肤病学 | 1篇 |
神经病学 | 10篇 |
特种医学 | 3篇 |
外科学 | 889篇 |
综合类 | 67篇 |
预防医学 | 4篇 |
眼科学 | 7篇 |
药学 | 19篇 |
中国医学 | 2篇 |
肿瘤学 | 12篇 |
出版年
2023年 | 10篇 |
2022年 | 3篇 |
2021年 | 20篇 |
2020年 | 37篇 |
2019年 | 40篇 |
2018年 | 39篇 |
2017年 | 36篇 |
2016年 | 37篇 |
2015年 | 57篇 |
2014年 | 51篇 |
2013年 | 57篇 |
2012年 | 39篇 |
2011年 | 44篇 |
2010年 | 57篇 |
2009年 | 38篇 |
2008年 | 43篇 |
2007年 | 62篇 |
2006年 | 53篇 |
2005年 | 51篇 |
2004年 | 76篇 |
2003年 | 67篇 |
2002年 | 42篇 |
2001年 | 43篇 |
2000年 | 34篇 |
1999年 | 35篇 |
1998年 | 17篇 |
1997年 | 13篇 |
1996年 | 24篇 |
1995年 | 11篇 |
1994年 | 8篇 |
1992年 | 4篇 |
1991年 | 2篇 |
1990年 | 1篇 |
1986年 | 1篇 |
排序方式: 共有1152条查询结果,搜索用时 125 毫秒
31.
Apolline Salama Gwénaëlle Evanno Jean Harb Jean‐Paul Soulillou 《Xenotransplantation》2015,22(2):85-94
Human beings do not synthesize the glycolyl form of the sialic acid (Neu5Gc) and only express the acetylated form of the sugar, whereas a diet‐based intake of Neu5Gc provokes a natural immunization and production of anti‐Neu5Gc antibodies in human serum. However, Neu5Gc is expressed on mammal glycoproteins and glycolipids in most organs and cells. We review here the relevance of Neu5Gc and anti‐Neu5Gc antibodies in the context of xenotransplantation and the use of animal‐derived molecules and products, as well as the possible consequences of a long‐term exposure to anti‐Neu5Gc antibodies in recipients of xenografts. In addition, the importance of an accurate estimation of the anti‐Neu5Gc response following xenotransplantation and the future contribution of knockout animals mimicking the human situation are also assessed. 相似文献
32.
Dissociation between anti‐porcine albumin and anti‐Gal antibody responses in non‐human primate recipients of intraportal porcine islet transplantation 下载免费PDF全文
33.
34.
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
35.
Rat‐to‐Chinese tree shrew heart transplantation is a novel small animal model to study non‐Gal‐mediated discordant xenograft humoral rejection 下载免费PDF全文
36.
Pre‐clinical heterotopic intrathoracic heart xenotransplantation: a possibly useful clinical technique 下载免费PDF全文
Bruno Reichart Stefan Buchholz Fabian Werner Isabelle Lutzmann Michael Schmoeckel Andreas Bauer Michael Thormann Martin Langenmayer Nadja Herbach Heike Pohla Rudolf Herzog Christopher G. A. McGregor David Ayares Eckhard Wolf Nikolai Klymiuk Andrea Baehr Alexander Kind Christian Hagl Ute Ganswindt Claus Belka Paolo Brenner 《Xenotransplantation》2015,22(6):427-442
37.
38.
39.
Alginate Encapsulant Incorporating CXCL12 Supports Long‐Term Allo‐ and Xenoislet Transplantation Without Systemic Immune Suppression 下载免费PDF全文
40.
H. E. Ahrens B. Petersen D. Herrmann A. Lucas‐Hahn P. Hassel M. Ziegler W. A. Kues U. Baulain W. Baars R. Schwinzer J. Denner D. Rataj S. Werwitzke A. Tiede A. K. Bongoni P. S. Garimella A. Despont R. Rieben H. Niemann 《American journal of transplantation》2015,15(5):1407-1414
Acute vascular rejection (AVR), in particular microvascular thrombosis, is an important barrier to successful pig‐to‐primate xenotransplantation. Here, we report the generation of pigs with decreased tissue factor (TF) levels induced by small interfering (si)RNA‐mediated gene silencing. Porcine fibroblasts were transfected with TF‐targeting small hairpin (sh)RNA and used for somatic cell nuclear transfer. Offspring were analyzed for siRNA, TF mRNA and TF protein level. Functionality of TF downregulation was investigated by a whole blood clotting test and a flow chamber assay. TF siRNA was expressed in all twelve liveborn piglets. TF mRNA expression was reduced by 94.1 ± 4.7% in TF knockdown (TFkd) fibroblasts compared to wild‐type (WT). TF protein expression in PAEC stimulated with 50 ng/mL TNF‐α was significantly lower in TFkd pigs (mean fluorescence intensity TFkd: 7136 ± 136 vs. WT: 13 038 ± 1672). TF downregulation significantly increased clotting time (TFkd: 73.3 ± 8.8 min, WT: 45.8 ± 7.7 min, p < 0.0001) and significantly decreased thrombus formation compared to WT (mean thrombus coverage per viewing field in %; WT: 23.5 ± 13.0, TFkd: 2.6 ± 3.7, p < 0.0001). Our data show that a functional knockdown of TF is compatible with normal development and survival of pigs. TF knockdown could be a valuable component in the generation of multi‐transgenic pigs for xenotransplantation. 相似文献