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Radwan H. Ahmed Hasniza Zaman Huri Zaid Al-Hamodi Sameer D. Salem Sekaran Muniandy 《PloS one》2015,10(10)
BackgroundA soluble form of CD26/dipeptidyl peptidase-IV (sCD26/DPP-IV) induces DPP-IV enzymatic activity that degrades incretin. We investigated fasting serum levels of sCD26/DPP-IV and active glucagon-like peptide-1 (GLP-1) in Malaysian patients with type 2 diabetes mellitus (T2DM) with and without metabolic syndrome (MetS), as well as the associations between sCD26/DPP-IV levels, MetS, and antidiabetic therapy.MethodsWe assessed sCD26/DPP-IV levels, active GLP-1 levels, body mass index (BMI), glucose, insulin, A1c, glucose homeostasis indices, and lipid profiles in 549 Malaysian subjects (including 257 T2DM patients with MetS, 57 T2DM patients without MetS, 71 non-diabetics with MetS, and 164 control subjects without diabetes or metabolic syndrome).ResultsFasting serum levels of sCD26/DPP-IV were significantly higher in T2DM patients with and without MetS than in normal subjects. Likewise, sCD26/DPP-IV levels were significantly higher in patients with T2DM and MetS than in non-diabetic patients with MetS. However, active GLP-1 levels were significantly lower in T2DM patients both with and without MetS than in normal subjects. In T2DM subjects, sCD26/DPP-IV levels were associated with significantly higher A1c levels, but were significantly lower in patients using monotherapy with metformin. In addition, no significant differences in sCD26/DPP-IV levels were found between diabetic subjects with and without MetS. Furthermore, sCD26/DPP-IV levels were negatively correlated with active GLP-1 levels in T2DM patients both with and without MetS. In normal subjects, sCD26/DPP-IV levels were associated with increased BMI, cholesterol, and LDL-cholesterol (LDL-c) levels.ConclusionSerum sCD26/DPP-IV levels increased in T2DM subjects with and without MetS. Active GLP-1 levels decreased in T2DM patients both with and without MetS. In addition, sCD26/DPP-IV levels were associated with Alc levels and negatively correlated with active GLP-1 levels. Moreover, metformin monotherapy was associated with reduced sCD26/DPP-IV levels. In normal subjects, sCD26/DPP-IV levels were associated with increased BMI, cholesterol, and LDL-c. 相似文献
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J. Falk-Vairant P. Corrèges L. Eder-Colli N. Salem F. M. Meunier B. Lesbats F. Loctin †M. Synguelakis M. Israël Y. Dunant 《Journal of neurochemistry》1996,66(3):1322-1325
Abstract: Transmitter release was elicited in two ways from cultured cells filled with acetylcholine: (a) in a biochemical assay by successive addition of a calcium ionophore and calcium and (b) electrophysiologically, by electrical stimulation of individual cells and real-time recording with an embryonic Xenopus myocyte. Glioma C6-Bu-1 cells were found to be competent for Ca2+ -dependent and quantal release. In contrast, no release could be elicited from mouse neuroblastoma N18TG-2 cells. However, acetylcholine release could be restored when N18TG-2 cells were transfected with a plasmid coding for mediatophore. Mediatophore is a protein of nerve terminal membranes purified from the Torpedo electric organ on the basis of its acetylcholine-releasing capacity. The transfected N18TG-2 cells expressed Torpedo mediatophore in their plasma membrane. In response to an electrical stimulus, they generated in the myocyte evoked currents that were curare sensitive and calcium dependent and displayed discrete amplitude levels, like in naturally occurring synapses. 相似文献
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Adoptive transfer of autologous tumor-reactive T cells holds promise as a cancer immunotherapy. In this approach, T cells
are harvested from a tumor-bearing host, expanded in vitro and infused back to the same host. Conditioning of the recipient
host with a lymphodepletion regimen of chemotherapy or radiotherapy before adoptive T cell transfer has been shown to substantially
improve survival and anti-tumor responses of the transferred cells. These effects are further enhanced when the adoptive T
cell transfer is followed by vaccination with tumor antigens in combination with a potent immune adjuvant. Although significant
progress has been made toward an understanding of the reasons underlying the beneficial effects of lymphodepletion to T cell
adoptive therapy, the precise mechanisms remain poorly understood. Recent studies, including ours, would indicate a more central
role for antigen presenting cells, in particular dendritic cells. Unraveling the exact role of these important cells in mediation
of the beneficial effects of lymphodepletion could provide novel pathways toward the rational design of more effective anti-cancer
immunotherapy. This article focuses on how the frequency, phenotype, and functions of dendritic cells are altered during the
lymphopenic and recovery phases post-induction of lymphodepletion, and how they affect the anti-tumor responses of adoptively
transferred T cells. 相似文献
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Detection and genotyping of group A rotaviruses isolated from sewage samples in Monastir,Tunisia between April 2007 and April 2010 下载免费PDF全文
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Chouaibi Moncef Boussaid Amel Donsì Francesco Ferrari Giovanna Hamdi Salem 《International journal of peptide research and therapeutics》2019,25(4):1509-1521
International Journal of Peptide Research and Therapeutics - In this study, response surface methodology, based on Box-Behnken design, was used to optimize the extraction conditions of protein... 相似文献