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11.
A "new" allotypic specificity (A9) of rabbit immunoglobulin 总被引:9,自引:0,他引:9
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Sarramegn V Muller I Milon A Talmont F 《Cellular and molecular life sciences : CMLS》2006,63(10):1149-1164
G protein-coupled receptors (GPCRS) represent a class of integral membrane proteins involved in many biological processes
and pathologies. Fifty percent of all modern drugs and almost 25% of the top 200 bestselling drugs are estimated to target
GPCRs. Despite these crucial biological implications, very little is known, at atomic resolution, about the detailed molecular
mechanisms by which these membrane proteins are able to recognize their extra-cellular stimuli and transmit the associated
messages. Obviously, our understanding of GPCR functioning would be greatly facilitated by the availability of high-resolution
three-dimensional (3D) structural data. However, expression, solubilization and purification of these membrane proteins are
not easy to achieve, and at present, only one 3D structure has been determined, that of bovine rhodopsin. This review presents
and compares the different successful strategies which have been applied to solubilize and purify recombinant GPCRs in the
perspective of structural biology experiments.
Received 21 November 2005; received after revision 20 January 2006; accepted 2 February 2006
An erratum to this article is available at . 相似文献
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Cisplatin-induced genes as potential markers for thyroid cancer 总被引:1,自引:0,他引:1
Lapouge G Millon R Muller D Abecassis J Eber M Bergerat JP Klein-Soyer C 《Cellular and molecular life sciences : CMLS》2005,62(1):53-64
Despite the uncontested role of p53 in cycle arrest/cell death after cisplatin treatment, to date the question whether wild-type p53 confers a resistant or sensitive status on the cell is still a matter of debate. Isogenic and isophenotypic human thyroid papillary carcinoma cell line variants for p53 differently expressed cycle genes after cisplatin treatment. Seven genes (CDC6-related protein, CCNC, GAS1, TFDP2, MAPK10/JNK3, WEE1, RPA1) selected after expression on an Atlas human cell cycle array were analyzed by quantitative real-time PCR. While cisplatin treatment increased their expression in p53 wild-type cells it decreased it in cells with inactivated p53 and had no or less effect on cells with mutated p53. These results show that in a well-defined system, different alterations of p53 can lead to a different regulation of genes and hence to either resistance or sensitivity to cisplatin. Moreover for the first time, MAPK10/JNK3 was identified in human thyroid cells and tissue. Four of the genes (CDC6-related protein, CCNC, GAS1 and TFDP2) were decreased in human papillary carcinoma tissues. Relevance of these genes (especially a decrease in GAS1 in thyroid papillary carcinoma) in various malignant pathologies has already been shown. These genes may be explored as new markers in advanced thyroid cancer such as metastatic and anaplastic forms displaying p53 alterations.Received 26 July 2004; received after revision 14 September 2004; accepted 26 October 2004 相似文献
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Epidermal antigens in cutaneous dysplasia and neoplasia 总被引:1,自引:0,他引:1
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In vivo specific antigen recognition by rosette forming cells 总被引:15,自引:0,他引:15
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Résumé L'action adrénocorticotrope d'un polypeptide à 25 acides aminés, comprenant 3 modifications de structure par rapport à la séquence 1–25 de l'ACTH naturelle est étudiée et démontrée. La destruction enzymatique de ce pentacosapeptide paraît être plus lente dans le sang que dans les tissus musculaire et sous-cutané. L'augmentation de la dose injectée produit un allongement de la durée de stimulation de la cortico-surrénale. 相似文献