全文获取类型
收费全文 | 1439篇 |
免费 | 188篇 |
国内免费 | 5篇 |
专业分类
耳鼻咽喉 | 4篇 |
儿科学 | 94篇 |
妇产科学 | 103篇 |
基础医学 | 242篇 |
口腔科学 | 20篇 |
临床医学 | 123篇 |
内科学 | 343篇 |
皮肤病学 | 15篇 |
神经病学 | 101篇 |
特种医学 | 69篇 |
外科学 | 115篇 |
综合类 | 37篇 |
一般理论 | 4篇 |
预防医学 | 164篇 |
眼科学 | 17篇 |
药学 | 115篇 |
中国医学 | 4篇 |
肿瘤学 | 62篇 |
出版年
2021年 | 16篇 |
2019年 | 20篇 |
2018年 | 33篇 |
2017年 | 16篇 |
2016年 | 14篇 |
2015年 | 23篇 |
2014年 | 18篇 |
2013年 | 33篇 |
2012年 | 59篇 |
2011年 | 56篇 |
2010年 | 30篇 |
2009年 | 28篇 |
2008年 | 56篇 |
2007年 | 51篇 |
2006年 | 61篇 |
2005年 | 58篇 |
2004年 | 34篇 |
2003年 | 41篇 |
2002年 | 33篇 |
2001年 | 34篇 |
2000年 | 45篇 |
1999年 | 45篇 |
1998年 | 14篇 |
1997年 | 19篇 |
1996年 | 37篇 |
1995年 | 30篇 |
1994年 | 18篇 |
1993年 | 19篇 |
1992年 | 45篇 |
1991年 | 37篇 |
1990年 | 25篇 |
1989年 | 47篇 |
1988年 | 31篇 |
1987年 | 32篇 |
1986年 | 29篇 |
1985年 | 36篇 |
1984年 | 33篇 |
1983年 | 29篇 |
1982年 | 32篇 |
1981年 | 24篇 |
1980年 | 18篇 |
1979年 | 23篇 |
1978年 | 17篇 |
1977年 | 27篇 |
1976年 | 18篇 |
1975年 | 18篇 |
1973年 | 18篇 |
1972年 | 16篇 |
1971年 | 13篇 |
1969年 | 17篇 |
排序方式: 共有1632条查询结果,搜索用时 15 毫秒
1.
2.
D Ginsburg 《Mayo Clinic proceedings. Mayo Clinic》1991,66(5):506-515
3.
Diarrhea is common after liver transplantation (LT). The true incidence of diarrhea in liver transplant recipients is unknown but possibly ranges from 10% to 43% based on a few published studies in other solid organ and bone marrow transplantation. Infectious etiologies, including cytomegalovirus (CMV), Clostridium difficile, and occasional atypical intestinal infections, are the most common causes. Diarrhea is also a frequent side effect of immunosuppressive medications. To variable extents, mycophenolate mofetil (MMF), cyclosporine A (CSA), tacrolimus, and sirolimus are all known to be associated with diarrhea. Rarely, graft-versus-host disease (GVHD), lymphoproliferative disorder, de novo inflammatory bowel disease (IBD), or colon cancer may present as diarrhea. Flare-up of preexisting IBD is also not uncommon after LT. However, the cause of acute diarrhea remains unidentified in 1 of 3 patients. This review summarizes the literature and provides recommendations on the management of acute diarrhea after LT. Although our focus is on LT, the etiology and management recommendations apply to most transplant recipients. 相似文献
4.
Staphylococcal toxin syndromes 总被引:1,自引:0,他引:1
C M Ginsburg 《The Pediatric infectious disease journal》1991,10(4):319-321
5.
6.
D Chitayat K A Hodgkinson O Ginsburg J Dimmick G V Watters 《American journal of medical genetics》1992,43(6):954-956
We report on a patient with myopathy, kyphoscoliosis, joint contractures, and a facial appearance consistent with King syndrome. Unlike other reported cases, our patient had hyperextensible joints, normal stature, and pectus excavatum. The cardiac ventricles, aorta, and pulmonary artery were dilated. Malignant hyperthermia did not occur under anaesthesia although there was a transient increase in CK levels. Muscle bulk and tone were significantly decreased but collagen and elastin fibres were normal. The variable clinical presentation of King syndrome suggests that the manifestations are caused by different congenital myopathies and in all cases there is probably an increased risk of malignant hyperthermia. 相似文献
7.
8.
RETROPERITONEAL MUCINOUS CYSTADENOMA PRESENTING AS A RENAL CYST 总被引:4,自引:0,他引:4
9.
10.
Isaac Ginsburg Ruth Borinski Milu Sadovnic Yael Eilam Kim Rainsford 《Inflammation》1987,11(3):253-277
Poly-l-histidine (PHSTD) of molecular weight 26,000 induced the generation of large amounts of Superoxide (O
2
–
) and hydrogen peroxide (H2O2) in human neutrophils (PMNs). Despite its low solubility at neutral pH, PHSTD was bound very rapidly to the PMN surfaces. Maximal generation of O
2
–
took place with 4–5 ×10–6 M of PHSTD, starting after a lag of about 25 sec and proceeding for 15–17 min at a rate of 150 nmol/107 PMNs/min, suggesting that this polycation is one of the most potent stimulators of O
2
–
generation known, PHSTD was found to be non-toxic for PMNs even at millimolar concentrations. Generation of O
2
–
by PHSTD depended on extracellular calcium; it was inhibited by calcium channel blockers and by trifluoperazine, and it triggered a sharp rise in intracellular calcium as determined by the Quin 2 fluorescence technique. The generation of both O
2
–
and H2O2 by PHSTD was partially inhibited by cytochalasin B or (CYB, CYE). On the other hand, CYB markedly enhanced the generation of both O
2
–
and H2O2 following stimulation of PMNs either by PHSTD, polyarginine, histone, or by antibody-opsonized group A streptococci. Electron microscopic analysis and NBT reduction tests revealed that both PHSTD and PHSTD-opsonized streptococci were avidly phagocytosed by PMNs. Since CYB totally inhibited internalization of both PHSTD and the PHSTD-opsonized streptococci, it was suggested that these agents stimulated oxygen radical generation mainly on the leukocyte surfaces. Complexes (CX) formed between PHSTD and polyanethole sulfonate (a strong polyanion) or between histone and the polyanion mimicked immune CX in their ability to trigger the generation of large amounts of O
2
–
which were inhibited by CYB. Generation of O
2
–
and chemiluminescence either by PHSTD or by PHSTD-opsonized streptococci were markedly inhibited by poly-l-glutamate, suggesting that PHSTD acted as a cationic agent which interacted via electrostatic forces with some negatively charged sites in the leukocyte membrane. Generation of H2O2 by PHSTD was also markedly inhibited by deoxyglucose, KCN, DASA, as well as by the lipoxygenase inhibitors nordihydroguaiaretic acid, phenidone, and propylgallate. On the other hand, cyclooxygenase inhibitors such as aspirin, indomethacin, and piroxicam were inactive, suggesting that arachidonic acid metabolism via lipoxygenase pathway might have been involved in the activation by PHSTD of the NADPH oxidase in PMNs. PHSTD may mimic the effects of antibodies both as an opsonin and as a potent stimulator of the respiratory burst in PMNs and may thus serve as a model for further study of leukocyte-bacteria interactions in infectious and inflammatory sites and of the pathogenicity of immune complexes.Supported by a research grant from Dr. S. M. Robbins of Cleveland, Ohio. 相似文献