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91.
Schlaubitz S Yatsenko SA Smith LD Keller KL Vissers LE Scott DA Cai WW Reardon W Abdul-Rahman OA Lammer EJ Lifchez CA Magenis E Veltman JA Stankiewicz P Zabel BU Lee B 《American journal of medical genetics. Part A》2007,(10):1071-1081
We describe our findings in a 46,XY female with a clinical features of Genitopatellar syndrome (GPS) and confirmed hermaphroditism with ovotestes, and five additional patients with GPS. GPS is a genetic disorder characterized by renal and genital anomalies, joint dislocation, aplastic or hypoplastic and often displaced patellae, minor facial anomalies, and mental retardation. The genital anomalies clearly distinguish GPS from nail-patella syndrome (NPS) that has similar features, but additionally shows hypoplastic finger- and toenails as found in the 46,XY female. In our patients no mutation was found in the coding regions of WNT4, WNT7A, TBX4, and LMX1B. Fluorescent in situ hybridization (FISH) and array-based comparative genome hybridization (aCGH) analysis showed a 3 Mb deletion of LMX1B, NR6A1, and NR5A1 (SF1) in the 46,XY female. This is the first report of a microdeletion causing haploinsuffiency of LMX1B and NR5A1. The deletion of LMX1B is responsible for the knee anomalies and the deletion of NR5A1 likely causes the sex reversal. Cytogenetic analysis of the five additional patients with diagnosed GPS failed to identify a similar microdeletion, or inversion of a potentially regulatory element between the two genes. This suggests that the locus 9q33-9q34 can be excluded for GPS and that the presented case is unique in its combination of GPS and NPS features caused by a microdeletion associated with loss of function of LMX1B and NR5A1. 相似文献
92.
Etschel JK Hückelhoven AG Hofmann C Zitzelsberger K Maurer K Bergmann S Mueller-Schmucker SM Wittmann J Spriewald BM Dörrie J Schaft N Harrer T 《Journal of immunological methods》2012,380(1-2):40-55
Efficient monitoring of HIV-1-specific T-cells is crucial for the development of HIV-1 vaccines and immunotherapies. Currently, mainly peptides and vaccinia vectors are used for detection of HIV-1-specific cytotoxic T-lymphocytes (CTL), however, as HIV-1 is a variable virus, it is unknown to what extent the T-cell response against the autologous virus is under- or overestimated by using antigens from heterologous viral strains. Therefore, we established a new method for immunomonitoring of CTL using electroporation of peripheral blood mononuclear cells (PBMC) with mRNA derived from autologous viral strains. From six HIV-1-infected patients virus derived mRNA was produced after PCR-based cloning of autologous gag (n=5) and/or nef genes (n=3) from plasma and electroporated into PBMC from patients and healthy donors. Electroporation of PBMC with mRNA resulted in efficient protein expression with good induction of γ-interferon (γ-IFN) release by specific T-cells comparable to peptide pools and better than recombinant vaccinia viruses. Three mRNA encoded autologous Gag proteins and one autologous mRNA encoded Nef protein were better recognized by autologous PBMC in comparison to heterologous mRNA encoded Gag or Nef proteins (SF2 or HXB2). However, in one case each, mRNA encoded autologous Gag or Nef, respectively, was recognized less efficiently due to the presence of CTL escape mutations. In summary, electroporation of PBMC with mRNA is a very efficient, easy and rapid method for immunomonitoring of HIV-1-specific T-cell responses against autologous viral strains. Our data demonstrate that patients' CTL responses against autologous viral strains may be under- or overestimated by using antigens from heterologous viral strains. 相似文献
93.
Molecular Analysis of Riboflavin Synthesis Genes in Bartonella henselae and Use of the ribC Gene for Differentiation of Bartonella Species by PCR 下载免费PDF全文
Stefan Bereswill Silke Hinkelmann Manfred Kist Anna Sander 《Journal of clinical microbiology》1999,37(10):3159-3166
The biosynthesis pathway for riboflavin (vitamin B(2)), the precursor of the essential cofactors flavin mononucleotide and flavin adenine dinucleotide, is present in bacteria and plants but is absent in vertebrates. Due to their conservation in bacterial species and their absence in humans, the riboflavin synthesis genes should be well suited either for detection of bacterial DNA in human specimens or for the differentiation of pathogenic bacteria by molecular techniques. A DNA fragment carrying the genes ribD, ribC, and ribE, which encode homologues of riboflavin deaminase (RibD) and subunits of riboflavin synthetase (RibC and RibE), respectively, was isolated from a plasmid-based DNA library of the human pathogen Bartonella henselae by complementation of a ribC mutation in Escherichia coli. Sequence analysis of the ribC gene region in strains of B. henselae, which were previously shown to be genetically different, revealed that the ribC gene is highly conserved at the species level. PCR amplification with primers derived from the ribC locus of B. henselae was used to isolate the corresponding DNA regions in B. bacilliformis, B. clarridgeiae, and B. quintana. Sequence analysis indicated that the riboflavin synthesis genes are conserved and show the same operon-like genetic organization in all four Bartonella species. Primer oligonucleotides designed on the basis of localized differences within the ribC DNA region were successfully used to develop species-specific PCR assays for the differentiation of B. henselae, B. clarridgeiae, B. quintana, and B. bacilliformis. The results obtained indicate that the riboflavin synthesis genes are excellent targets for PCR-directed differentiation of these emerging pathogens. The PCR assays developed should increase our diagnostic potential to differentiate Bartonella species, especially B. henselae and the newly recognized species B. clarridgeiae. 相似文献
94.
95.
Melanie Fhrenbach Rami Abou Jamra Arndt Borkhardt Triantafyllia Brozou Petra Muschke Bernt Popp Linda K. Rey Jrg Schaper Harald Surowy Martin Zenker Christiane Zweier Dagmar Wieczorek Silke Redler 《Clinical genetics》2021,99(1):199-207
Ververi‐Brady syndrome (VBS, # 617982) is a rare developmental disorder, and loss‐of‐function variants in QRICH1 were implicated in its etiology. Furthermore, a recognizable phenotype was proposed comprising delayed speech, learning difficulties and dysmorphic signs. Here, we present four unrelated individuals with one known nonsense variant (c.1954C > T; p.[Arg652*]) and three novel de novo QRICH1 variants, respectively. These included two frameshift mutations (c.832_833del; p.(Ser278Leufs*25), c.1812_1813delTG; p.(Glu605Glyfs*25)) and interestingly one missense mutation (c.2207G > A; p.[Ser736Asn]), expanding the mutational spectrum. Enlargement of the cohort by these four individuals contributes to the delineation of the VBS phenotype and suggests expressive speech delay, moderate motor delay, learning difficulties/mild ID, mild microcephaly, short stature and notable social behavior deficits as clinical hallmarks. In addition, one patient presented with nephroblastoma. The possible involvement of QRICH1 in pediatric cancer assumes careful surveillance a key priority for outcome of these patients. Further research and enlargement of cohorts are warranted to learn about the genetic architecture and the phenotypic spectrum in more detail. 相似文献
96.
In vivo suppressive function of myeloid-derived suppressor cells is limited to the inflammatory site 总被引:1,自引:0,他引:1
Haverkamp JM Crist SA Elzey BD Cimen C Ratliff TL 《European journal of immunology》2011,41(3):749-759
Current paradigms suggest that, despite the heterogeneity of myeloid-derived suppressor cells (MDSC), all Gr-1(+) CD11b(+) cells can exert suppressive function when exposed to inflammatory stimuli. In vitro evaluation shows that MDSC from multiple tissue sites have suppressive activity, and in vivo inhibition of MDSC enhances T-cell function; however, the relative capacity of MDSC present at localized inflammatory sites or in peripheral tissues to suppress T-cell responses in vivo has not been directly evaluated. In the current study, we observed that during a tissue-specific inflammatory response, MDSC inhibition of CD8(+) T-cell proliferation and IFN-γ production was restricted to the inflammatory site. Using a prostate-specific inflammatory model and a heterotopic prostate tumor model, we showed that MDSC from inflammatory sites or from tumor tissue possess immediate capacity to inhibit T-cell function, whereas those isolated from peripheral tissues (spleens and liver) were not suppressive without activation of iNOS by exposure to IFN-γ. These data suggest that MDSC are important regulators of immune responses in the prostate during acute inflammation and the chronic inflammatory setting of tumor growth, and that regulation of T-cell function by MDSC during a localized inflammatory response is restricted in vivo to the site of an ongoing immune response. 相似文献
97.
Yasser Khazaal Jérôme Favrod Silke AzoulaySophie Claude Finot Maria BernabottoStéphane Raffard Joël LibbrechtKaren Dieben David LevoyerValentino Pomini 《Patient education and counseling》2011,83(2):210-216
Objective
“Michael's Game” is a card game which aims at familiarizing healthcare professionals and patients with cognitive therapy of psychotic symptoms. The present study tests the feasibility and the impact of the intervention in naturalistic settings.Methods
135 patients were recruited in 11 centres. They were assessed pre- and post-tests with the Beck Cognitive Insight Scale (BCIS) and the Peters Delusion Inventory-21 items (PDI-21).Results
Data about 107 patients were included in the entire analyses. Significant improvements were observed on BCIS subscales as well as a reduction of severity of conviction and preoccupation scores on the PDI-21. The intervention has a moderate effect on the PDI-21 preoccupation and conviction as well as the BCIS subscales. Patients who benefit the most from the program are patients who have a low degree of self-reflectiveness and patients who are concomitantly preoccupied by their symptoms.Conclusion
The present study supports the feasibility and effectiveness of “Michael's Game” in naturalistic settings.Practical implications
The game seems to be a useful tool for patients with psychotic disorders. 相似文献98.
99.
Herbert Sperling Marc Gittelman Christiane Norenberg Ernst Ulbrich Silke Ewald 《The journal of sexual medicine》2011,8(1):261-271
IntroductionMen with erectile dysfunction (ED) are typically older and have one or more underlying cardiovascular conditions.AimTo determine the efficacy and safety of a new orodispersible tablet (ODT) formulation of vardenafil for the treatment of ED, and whether age, or the presence of underlying conditions affects treatment outcomes.MethodsThis is an integrated analysis of data from two phase III, double‐blind, multicenter, randomized, parallel‐group, placebo‐controlled studies that compared 10 mg on‐demand vardenafil ODT with placebo in a general population of men with ED, stratified so that approximately 50% of patients were aged ≥65 years. Results were reported by age (<65 vs. ≥65 years) and presence/absence of diabetes, dyslipidemia, or hypertension.Main Outcome MeasuresPrimary measures were the erectile function domain of the International Index of Erectile Function (IIEF‐EF) and Sexual Encounter Profile questions 2 (SEP2) and 3 (SEP3).ResultsOf the 701 men randomized (51% aged ≥65 years), 686 were included in the intent‐to‐treat population (placebo, n = 334; vardenafil ODT, n = 352). Vardenafil ODT was significantly superior to placebo for all primary efficacy measures, regardless of age, baseline ED severity, or underlying condition (P < 0.0001 for vardenafil vs. placebo for each endpoint). IIEF‐EF scores and SEP2/3 success rates in older patients and men with underlying conditions were not significantly different to those of younger patients or men without underlying conditions. Adverse events (AEs) were mostly mild to moderate in severity, occurring with higher incidence in the vardenafil vs. placebo group. The most frequently reported drug‐related AEs in the vardenafil group were headache, flushing, nasal congestion, dizziness, and dyspepsia, consistent with the known safety profile of phosphodiesterase type 5 inhibitors.ConclusionsVardenafil ODT significantly improves erectile function in men with ED regardless of age, baseline ED severity, or underlying condition. Sperling H, Gittelman M, Norenberg C, Ulbrich E, and Ewald S. Efficacy and safety of an orodispersible vardenafil formulation for the treatment of erectile dysfunction in elderly men and those with underlying conditions: An integrated analysis of two pivotal trials. J Sex Med 2011;8:261–271. 相似文献
100.
Aberrant cell signalling in PBMCs upon IFN‐α stimulation in primary Sjögren's syndrome patients associates with type I interferon signature 下载免费PDF全文
Richard Davies Daniel Hammenfors Brith Bergum Petra Vogelsang Sonia Gavasso Johan G. Brun Roland Jonsson Silke Appel 《European journal of immunology》2018,48(7):1217-1227
Primary Sjögren's syndrome (pSS) is a complex systemic autoimmune disease with heterogeneous disease manifestations. Genetic predisposition, hormonal and environmental factors are all thought to contribute to disease etiology and pathogenesis. A better understanding of the disease pathogenesis is required in order to establish new targeted therapies. We analysed MAPK/ERK and JAK/STAT signalling networks in peripheral blood mononuclear cells (PBMCs) upon stimulation with interferon alpha 2b (IFN‐α2b) by flow cytometry to define potentially dysfunctional intracellular signalling pathways involved in disease pathogenesis. Cells derived from pSS patients displayed small but significant increases in basal phosphorylation levels of numerous signalling proteins compared to cells from healthy donors. The phosphorylation profiles following stimulation with IFNα2b differed significantly between pSS patients and healthy donors, especially regarding STAT1 Y701. PCA further grouped patients according to clinical characteristics. Type I IFN induced gene expression was found to negatively correlate with the IFN‐α2b induced phosphorylation of STAT3 S727 in T cells and positively with pSTAT1 Y701 in B cells. Increases in pSTAT1 Y701 were associated with the presence of autoantibodies. Our results indicate involvement of both STAT3 S727 and STAT1 Y701 pathways in pSS patients. Therapies targeting these pathways might therefore be beneficial for certain subgroups of patients. 相似文献