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排序方式: 共有195条查询结果,搜索用时 265 毫秒
51.
M. Frediani R. Cremonini G. Salvi C. Caprari A. Desiderio R. D'Ovidio F. Cervone G. De Lorenzo 《TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik》1993,87(3):369-373
Polygalacturonase-inhibiting protein (PGIP) is a cell wall protein which inhibits fungalendopolygalacturonases. A small gene family encodesPGIP in the genome of common bean, as indicated by Southernblot experiments performed at high-stringency conditions. Southern-blot analysis of DNA extracted from different cultivars ofPhaseolus vulgaris and fromPhaseolus coccineus showed length polymorphism of the hybridizing restriction fragments. The cytological localization of thePGIP genes was determined in polytene chromosomes of theP. vulgaris embryo suspensor cells. In-situ hybridization experiments using the clonedPGIP gene revealed labelling over a single region of the pericentromeric heterochromatin of chromosome pair X, next to the euchromatin, suggesting thatPGIP gene family may be clustered in one chromosomal region. 相似文献
52.
Xuegong Zhu Dominic M. Desiderio 《Journal of chromatography. B, Analytical technologies in the biomedical and life sciences》1993,616(2)
Significant post-mortem changes in peptide concentration occur within the previously unstudied timeframe, i.e. within 1 h, for the proenkephalin A, proopiomelanoccortin, and tachykinin neuropeptidergic systems in the pituitary. These data differ from data obtained in other studies that concluded that peptides are stable for up to 72 h post-mortem. The post-mortem stability of the three neuropeptides, methionine enkephalin, substance P, and β-endorphin, was studied in the rat pituitary to test the hypothesis that significant post-mortem concentration changes of those three neuropeptides occur in the immediate post-mortem time period. 相似文献
53.
Four prostaglandins-PGE1, PGE2, 190H PGE1 and 190H PGE2-were quantified in human seminal fluid by GC-MS-SIM using only the internal standard, d4-PGE2. Methods and calculations were developed to minize errors inherent in using only one internal standard for quantifying four closely related prostaglandins. Preliminary data concerning the statistical significance of the differences found between PGE and 190H PGE levels in fertile, azospermic and oligospermic men are reported. 相似文献
54.
Peter W. Tinsley Genevieve H. Fridland John T. Killmar Dominic M. Desiderio 《Peptides》1988,9(6):1373-1379
The immunologically detected neuropeptides methionine enkephalin (ME), substance P (SP), beta-endorphin (beta-End), and alpha-melanocyte stimulating hormone (alpha-MSH) were purified from bovine corneal extracts by gradient, followed by isocratic, reversed phase-high performance liquid chromatography (RP-HPLC) and characterized, after both chromatographic steps, by radioimmunoassay (RIA). Immunologically detected ME and SP were purified from canine corneal extracts by gradient RP-HPLC and characterized by RIA. An anatomical study of the bovine cornea separated the cornea into an epithelium-enriched and a stroma-enriched portion. After gradient RP-HPLC, RIA demonstrated that all the ME-like immunoreactivity was located in the corneal epithelium, whereas the SP-like immunoreactivity was distributed between the stroma and epithelium in an approximate two-to-one ratio. 相似文献
55.
Sandhya Chipurupalli Raja Ganesan Giulia Martini Luigi Mele Alessio Reggio Marianna Esposito Elango Kannan Vigneshwaran Namasivayam Paolo Grumati Vincenzo Desiderio Nirmal Robinson 《Cell death & disease》2022,13(4)
In the tumor microenvironment, cancer cells experience hypoxia resulting in the accumulation of misfolded/unfolded proteins largely in the endoplasmic reticulum (ER). Consequently, ER proteotoxicity elicits unfolded protein response (UPR) as an adaptive mechanism to resolve ER stress. In addition to canonical UPR, proteotoxicity also stimulates the selective, autophagy-dependent, removal of discrete ER domains loaded with misfolded proteins to further alleviate ER stress. These mechanisms can favor cancer cell growth, metastasis, and long-term survival. Our investigations reveal that during hypoxia-induced ER stress, the ER-phagy receptor FAM134B targets damaged portions of ER into autophagosomes to restore ER homeostasis in cancer cells. Loss of FAM134B in breast cancer cells results in increased ER stress and reduced cell proliferation. Mechanistically, upon sensing hypoxia-induced proteotoxic stress, the ER chaperone BiP forms a complex with FAM134B and promotes ER-phagy. To prove the translational implication of our mechanistic findings, we identified vitexin as a pharmacological agent that disrupts FAM134B-BiP complex, inhibits ER-phagy, and potently suppresses breast cancer progression in vivo.Subject terms: Cell biology, Cancer 相似文献
56.
The periodic destruction of RAG-2 at the G1-to-S transition couples V(D)J recombination to the G0 and G1 cell cycle phases and coordinates RAG-mediated DNA cleavage with DNA repair by nonhomologous end joining. To define the mechanism by which this occurs, we reproduced cell cycle-dependent regulation of the V(D)J recombinase in a cell-free system. The ubiquitin-proteasomal pathway carries out destruction of RAG-2 in lysates of S phase cells and during S phase in vivo. Remarkably, the Skp2-SCF ubiquitin ligase, which plays a central role in cell cycle regulation through the destruction of p27, mediates ubiquitylation of RAG-2 in vitro and degradation of RAG-2 in vivo. The regulation of antigen receptor gene assembly by Skp2-SCF provides an unexpected and direct mechanistic link between DNA recombination and the cell cycle. 相似文献
57.
The mass spectra of the trimethylsilyl ester trimethylsilyl ether derivatives of prostaglandins F1α, F2α and F2β are reported and discussed. Accurate masses from the high resolution spectra of these compounds are also presented. These spectra are interpreted with the aid of those of the corresponding d9-trimethylsilyl derivatives and selectively labeled trimethylsilyl ester-d9-trimethylsilyl ether derivatives. It was found that metastabledefocusing was helpful in elucidation of the mechanisms of formation of some ions. 相似文献
58.
A high‐density,SNP‐based consensus map of tetraploid wheat as a bridge to integrate durum and bread wheat genomics and breeding
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Marco Maccaferri Andrea Ricci Silvio Salvi Sara Giulia Milner Enrico Noli Pier Luigi Martelli Rita Casadio Eduard Akhunov Simone Scalabrin Vera Vendramin Karim Ammar Antonio Blanco Francesca Desiderio Assaf Distelfeld Jorge Dubcovsky Tzion Fahima Justin Faris Abraham Korol Andrea Massi Anna Maria Mastrangelo Michele Morgante Curtis Pozniak Amidou N'Diaye Steven Xu Roberto Tuberosa 《Plant biotechnology journal》2015,13(5):648-663
59.
Vincenzo Desiderio Francesco De Francesco Chiara Schiraldi Alfredo De Rosa Annalisa La Gatta Francesca Paino Riccardo d'Aquino Giuseppe Andrea Ferraro Virginia Tirino Gianpaolo Papaccio 《Journal of cellular physiology》2013,228(8):1762-1773
Mesenchymal stem cell (MSC) therapy holds promise for treating diseases and tissue repair. Regeneration of skeletal muscle tissue that is lost during pathological muscle degeneration or after injuries is sustained by the production of new myofibers. Human Adipose stem cells (ASCs) have been reported to regenerate muscle fibers and reconstitute the pericytic cell pool after myogenic differentiation in vitro. Our aim was to evaluate the differentiation potential of constructs made from a new cross‐linked hyaluronic acid (XHA) scaffold on which different sorted subpopulations of ASCs were loaded. Thirty days after engraftment in mice, we found that NG2+ ASCs underwent a complete myogenic differentiation, fabricating a human skeletal muscle tissue, while NG2? ASCs merely formed a human adipose tissue. Myogenic differentiation was confirmed by the expression of MyoD, MF20, laminin, and lamin A/C by immunofluorescence and/or RT‐PCR. In contrast, adipose differentiation was confirmed by the expression of adiponectin, Glut‐4, and PPAR‐γ. Both tissues formed expressed Class I HLA, confirming their human origin and excluding any contamination by murine cells. In conclusion, our study provides novel evidence that NG2+ ASCs loaded on XHA scaffolds are able to fabricate a human skeletal muscle tissue in vivo without the need of a myogenic pre‐differentiation step in vitro. We emphasize the translational significance of our findings for human skeletal muscle regeneration. J. Cell. Physiol. 228: 1762–1773, 2013. © 2013 Wiley Periodicals, Inc. 相似文献