全文获取类型
收费全文 | 1596篇 |
免费 | 63篇 |
国内免费 | 41篇 |
专业分类
耳鼻咽喉 | 1篇 |
儿科学 | 47篇 |
妇产科学 | 16篇 |
基础医学 | 157篇 |
口腔科学 | 14篇 |
临床医学 | 156篇 |
内科学 | 356篇 |
皮肤病学 | 19篇 |
神经病学 | 75篇 |
特种医学 | 204篇 |
外科学 | 194篇 |
综合类 | 28篇 |
一般理论 | 2篇 |
预防医学 | 126篇 |
眼科学 | 20篇 |
药学 | 118篇 |
中国医学 | 1篇 |
肿瘤学 | 166篇 |
出版年
2022年 | 9篇 |
2021年 | 24篇 |
2020年 | 13篇 |
2019年 | 26篇 |
2018年 | 29篇 |
2017年 | 8篇 |
2016年 | 23篇 |
2015年 | 24篇 |
2014年 | 32篇 |
2013年 | 50篇 |
2012年 | 52篇 |
2011年 | 57篇 |
2010年 | 42篇 |
2009年 | 59篇 |
2008年 | 62篇 |
2007年 | 85篇 |
2006年 | 64篇 |
2005年 | 74篇 |
2004年 | 64篇 |
2003年 | 49篇 |
2002年 | 55篇 |
2001年 | 57篇 |
2000年 | 46篇 |
1999年 | 58篇 |
1998年 | 45篇 |
1997年 | 46篇 |
1996年 | 33篇 |
1995年 | 19篇 |
1994年 | 14篇 |
1993年 | 21篇 |
1992年 | 40篇 |
1991年 | 28篇 |
1990年 | 33篇 |
1989年 | 38篇 |
1988年 | 48篇 |
1987年 | 35篇 |
1986年 | 26篇 |
1985年 | 28篇 |
1984年 | 8篇 |
1983年 | 14篇 |
1982年 | 11篇 |
1981年 | 16篇 |
1980年 | 7篇 |
1979年 | 19篇 |
1978年 | 9篇 |
1977年 | 13篇 |
1975年 | 17篇 |
1974年 | 8篇 |
1973年 | 10篇 |
1968年 | 6篇 |
排序方式: 共有1700条查询结果,搜索用时 46 毫秒
1.
SG Hannover 《MedR Medizinrecht》2006,24(9):547-551
Abstrakt 1. § 95b Abs. 3 S. 1 SGB V normiert eine Schuldübernahme i.S. des § 69 S. 3 SGB V i.V. mit § 414 BGB.
2. Ein Vertrags(zahn)arzt, der in einem mit Kollegen aufeinander abgestimmten Verfahren oder Verhalten auf seine Zulassung
verzichtet, ist im Anschluss hieran nicht berechtigt, nach Ma?gabe des § 95 Abs. 3 SGB V Versicherte der gesetzlichen Krankenversicherung
als Behandlungsf?lle, die erst nach dem Verzicht aufgenommen werden, zu behandeln. (Leits?tze des Bearbeiters) 相似文献
2.
Michael Rosenzweig Martha Skinner Tatiana Prokaeva Roger Théberge Catherine Costello Brian M Drachman Lawreen H Connors 《Amyloid》2007,14(1):65-71
We report the identification of a new transthyretin (TTR) gene mutation and variant protein, Glu61Gly, in a 55-year-old man with progressive cardiomyopathy, mild peripheral neuropathy and bilateral carpal tunnel syndrome. A diagnosis of TTR-associated familial amyloidosis (ATTR) was considered after an endomyocardial biopsy revealed amyloid deposits in the heart of a patient who had no family history of amyloidosis and no evidence of a plasma cell dyscrasia. Serum screening for a TTR variant by isoelectric focusing (IEF) was positive and prompted further studies to identify the genetic abnormality and to characterize the amyloidogenic protein. Direct DNA sequence analysis of all four coding regions in the TTR gene demonstrated heterozygosity in exon 3. Near equal amounts of guanine (G) and adenine (A) were observed at the second base position of codon 61. The wild-type (GAG) and mutated (GGG) sequences found in codon 61 correspond to glutamic acid (Glu) and glycine (Gly) residues, amino acids which differ in mass by -72 Da. Mass spectrometric analyses of TTR immunoprecipitated from serum showed the presence of both wild-type and variant proteins. The observed mass results for the wild-type and variant proteins were consistent with the predicted values calculated from the genetic analysis data. 相似文献
3.
4.
ZQ Yin MD SG Crewther PhD B Pirie BSc DP Crewther PhD 《Clinical & experimental ophthalmology》1997,25(4):107-109
Purpose: It was investigated whether alterations in neuronal structure and function occasioned by strabismic amblyopia also may be reflected in alterations in the expression on Y type neurons of a Cat-301 antibody sensitive antigen in the lateral geniculate nucleus (LGN) and cortex of our cat model of strabismic amblyopia. Methods/Results: The percentage of positively labelled cells was reduced in LGN laminae that received input from the deviated eye in strabismic amblyopic cats compared with normal cats. In the strabismic cortex, the density of immunopositive neurons was significantly reduced compared with normal, the effect being most pronounced in layer IV Conclusions: Despite previous physiological recordings indicating a decrease in X-cell associated acuity in strabismic amblyopia, the present findings imply that the changes in the early visual experience occasioned by strabismus also produce specific molecular changes in theY neuronal class. 相似文献
5.
6.
Established nonexpanding hematomas can be successfully treated with minimal morbidity using standard liposucstion techniques at the bedside or in an outpatient setting under local anesthesia. The authors presents a series of eight patients and discuss current concepts of dealing with this common and distressing surgical complication. 相似文献
7.
8.
Infection with larval trematodes has been shown to inhibit several snail-host defences, including hemocyte phagocytosis, cytotoxicity, motility, and adherence. Certain plasma factors which mediate snail defence responses, and which may be produced by host hemocytes, also appear to be altered by these parasites. In this study we present protocols for the isolation of 2 proteins from larval Schistosoma mansoni excretory-secretory (ES) products and detail the effects of these components on Biomphalaria glabrata hemocyte protein synthetic/secretory (S/S) activity. Schistosome ES proteins, separated with a combination of membrane ultrafiltration, size exclusion, and ion exchange chromatography, were tested for their in vitro effect on cultured snail hemocytes, in the presence and absence of homologous plasma. A high-molecular-weight ultrafiltration fraction of parasite ES products (H30), in combination with plasma, was found to differentially affect susceptible (M-line) and resistant (10-R2) snail hemocytes. Secretion of metabolically labeled polypeptides by M-line cells was inhibited significantly while the S/S response of 10-R2 hemocyte polypeptides was not affected. In the absence of homologous plasma, little or no differential affect of ES polypeptides on hemocyte S/S activity was seen. Much of the inhibitory activity of H30 was attributable to a partially purified fraction, Peak I (PkI), of ES products. Evidence suggests that, in its native state, PkI is a high-molecular-weight protein aggregate comprising subunits of approximately 22-24 kDa. Thus, PkI, in the presence of homologous plasma components, is a potential mediator of schistosome-induced suppression of polypeptide synthesis or secretion in hemocytes of susceptible snails. In combination with other parasite and host factors, PkI may be involved in the host-parasite interaction which leads to the state of susceptibility or resistance found in our strains of B. glabrata. 相似文献
9.
SG Berlin 《MedR Medizinrecht》2007,25(7):451-453
Abstrakt Bei der Bestimmung des Individualbudgets eines haus?rztlich t?tigen Vertragsarztes sind auch von diesem im Bemessungszeitraum
zul?ssig erbrachte sog. „KO-Leistungen“ zu berücksichtigen. Es ist irrelevant, wenn diese Leistungen nach Ende des Bemessungszeitraums
vom Leistungserbringer nicht mehr abgerechnet werden dürfen. (Leitsatz des Bearbeiters) 相似文献
10.