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排序方式: 共有520条查询结果,搜索用时 46 毫秒
421.
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Philipp Beckhove Rolf Warta Britt Lemke Diana Stoycheva Frank Momburg Martina Schn?lzer Uwe Warnken Hubertus Schmitz-Winnenthal Rezvan Ahmadi Gerhard Dyckhoff Mariana Bucur Simone Jünger Thomas Schueler Volker Lennerz Thomas Woelfel Andreas Unterberg Christel Herold-Mende 《The Journal of clinical investigation》2010,120(6):2230-2242
Identifying the antigens that have the potential to trigger endogenous antitumor responses in an individual cancer patient is likely to enhance the efficacy of cancer immunotherapy, but current methodologies do not efficiently identify such antigens. This study describes what we believe to be a new method of comprehensively identifying candidate tissue antigens that spontaneously cause T cell responses in disease situations. We used the newly developed automated, two-dimensional chromatography system PF2D to fractionate the proteome of human tumor tissues and tested protein fractions for recognition by preexisting tumor-specific CD4+ Th cells and CTLs. Applying this method using mice transgenic for a TCR that recognizes an OVA peptide presented by MHC class I, we demonstrated efficient separation, processing, and cross-presentation to CD8+ T cells by DCs of OVA expressed by the OVA-transfected mouse lymphoma RMA-OVA. Applying this method to human tumor tissues, we identified MUC1 and EGFR as tumor-associated antigens selectively recognized by T cells in patients with head and neck cancer. Finally, in an exemplary patient with a malignant brain tumor, we detected CD4+ and CD8+ T cell responses against two novel antigens, transthyretin and calgranulin B/S100A9, which were expressed in tumor and endothelial cells. The immunogenicity of these antigens was confirmed in 4 of 10 other brain tumor patients. This fast and inexpensive method therefore appears suitable for identifying candidate T cell antigens in various disease situations, such as autoimmune and malignant diseases, without being restricted to expression by a certain cell type or HLA allele. 相似文献
423.
Persistence of human multilineage, self-renewing lymphohematopoietic stem cells in chimeric sheep 总被引:1,自引:1,他引:1
Srour EF; Zanjani ED; Cornetta K; Traycoff CM; Flake AW; Hedrick M; Brandt JE; Leemhuis T; Hoffman R 《Blood》1993,82(11):3333-3342
We have previously reported the ability of uncharacterized human bone marrow (BM) cells to engraft into preimmune fetal sheep, thereby creating sheep-human chimera suitable for in vivo examination of the properties of human hematopoietic stem cells (HSC). Adult human bone marrow CD34+ HLA-DR- cells have been extensively characterized in vitro and have been demonstrated to contain a number of primitive hematopoietic progenitor cells (PHPC). However, the capacity of such highly purified populations of human marrow CD34+ HLA-DR- cells to undergo in vivo self-renewal and multipotential lymphohematopoietic differentiation has not been previously demonstrated. To achieve that, human CD34+ HLA-DR- cells were transplanted in utero into immunoincompetent fetal sheep to investigate the BM-populating potential of these cells. Long-term chimerism, sustained human hematopoiesis, and expression of human cells belonging to all human blood cell lineages were demonstrated in two animals for more than 7 months' posttransplantation. Chimeric BM contained erythroid, granulocytic/monocytic, and megakaryocytic hematopoietic progenitor cells, as well as the primitive high proliferative potential colony- forming cell (HPP-CFC). Under a variety of in vitro experimental conditions, chimeric BM cells gave rise to human T cells expressing T- lymphocyte-specific markers, human natural killer (NK) cells, and human IgG-producing B cells. In vivo expansion and possibly self-renewal of transplanted PHPC was confirmed by the detection in chimeric BM 130 days' posttransplantation of CD34+ HLA-DR- cells, the phenotype of human cells constituting the stem-cell graft. These studies demonstrate not only the BM-populating capacity, multipotential differentiation, and most likely self-renewal capabilities of human CD34+ HLA-DR- cells, but also that this BM population contains human HSC. Furthermore, it appears that this animal model of xenogeneic stem-cell transplantation is extremely useful for in vivo examination of human hematopoiesis and the behavioral and functional characteristics of human HSC. 相似文献
424.
Schmoch Thomas Jungk Christine Bruckner Thomas Haag Sabine Zweckberger Klaus von Deimling Andreas Brenner Thorsten Unterberg Andreas Weigand Markus A. Uhle Florian Herold-Mende Christel 《Neurosurgical review》2021,44(5):2707-2715
Neurosurgical Review - Recent data suggest that the type of anesthesia used during the resection of solid tumors impacts the long-term survival of patients favoring total-intravenous-anesthesia... 相似文献
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SEBASTIAN STEC M.D. Ph.D. JANUSZ ŚLEDŹ M.D. MARIUSZ MAZIJ M.D. MAŁGORZATA RAŚ M.D. BARTOSZ LUDWIK M.D. MICHAŁ CHRABĄSZCZ B.S. R.N. ARKADIUSZ ŚLEDŹ B.S. MAŁGORZATA BANASIK R.N. MAGDALENA BZYMEK R.N. KRZYSZTOF MŁYNARCZYK M.D. KAROL DEUTSCH M.St. MICHAŁ LABUS M.D. JERZY ŚPIKOWSKI M.D. LESŁAW SZYDŁOWSKI M.D. Ph.D. 《Journal of cardiovascular electrophysiology》2014,25(8):866-874
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David E. Reuss Felix Sahm Daniel Schrimpf Benedikt Wiestler David Capper Christian Koelsche Leonille Schweizer Andrey Korshunov David T. W. Jones Volker Hovestadt Michel Mittelbronn Jens Schittenhelm Christel Herold-Mende Andreas Unterberg Michael Platten Michael Weller Wolfgang Wick Stefan M. Pfister Andreas von Deimling 《Acta neuropathologica》2015,129(1):133-146
430.
David E. Reuss Yasin Mamatjan Daniel Schrimpf David Capper Volker Hovestadt Annekathrin Kratz Felix Sahm Christian Koelsche Andrey Korshunov Adriana Olar Christian Hartmann Jaap C. Reijneveld Pieter Wesseling Andreas Unterberg Michael Platten Wolfgang Wick Christel Herold-Mende Kenneth Aldape Andreas von Deimling 《Acta neuropathologica》2015,129(6):867-873