排序方式: 共有52条查询结果,搜索用时 0 毫秒
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Potassium fluxes in quiescent and beating frog ventricle 总被引:1,自引:0,他引:1
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Myofibrillar protein degradation after eccentric exercise 总被引:3,自引:0,他引:3
A. C. Snyder D. R. Lamb C. P. Salm M. D. Judge E. D. Aberle E. W. Mills 《Cellular and molecular life sciences : CMLS》1984,40(1):69-70
Summary Male rats were run downhill for 90 minutes (nonexhaustive). Following the exercise, muscle protein degradation was increased, as determined by urinary 3-methylhistidine. However, minimal changes were observed in the relative percentage of the minor myofibrillar proteins and in the protease calcium activated factor in the long head of the triceps brachii muscle (eccentrically exercised) following the exercise bout. 相似文献
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Human fibroblasts and A431 human epidermoid carcinoma cells were cultured on gamma-irradiated human amnion collagen as well as on plastic dishes and non-irradiated collagen coated dishes. The morphology, attachment, growth and short-term cytotoxicity of these culture conditions have been determined. Both irradiated and non-irradiated amnion collagen enhanced the attachment and proliferation of fibroblasts as compared to the plastic dishes. No differences in these properties were observed for A431 cells cultured on irradiated collagen when compared with culture on non-irradiated collagen substrates. Cytotoxicity assays showed that irradiated and non-irradiated collagens were not cytotoxic for either fibroblasts or A431 cells. The results demonstrated that amnion collagen irradiated at doses of 0.25-2.0 Mrads is optimal for cell growth. 相似文献
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Emilsson V Thorleifsson G Zhang B Leonardson AS Zink F Zhu J Carlson S Helgason A Walters GB Gunnarsdottir S Mouy M Steinthorsdottir V Eiriksdottir GH Bjornsdottir G Reynisdottir I Gudbjartsson D Helgadottir A Jonasdottir A Jonasdottir A Styrkarsdottir U Gretarsdottir S Magnusson KP Stefansson H Fossdal R Kristjansson K Gislason HG Stefansson T Leifsson BG Thorsteinsdottir U Lamb JR Gulcher JR Reitman ML Kong A Schadt EE Stefansson K 《Nature》2008,452(7186):423-428
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Villasenor JS Lamb DQ Ricker GR Atteia JL Kawai N Butler N Nakagawa Y Jernigan JG Boer M Crew GB Donaghy TQ Doty J Fenimore EE Galassi M Graziani C Hurley K Levine A Martel F Matsuoka M Olive JF Prigozhin G Sakamoto T Shirasaki Y Suzuki M Tamagawa T Vanderspek R Woosley SE Yoshida A Braga J Manchanda R Pizzichini G Takagishi K Yamauchi M 《Nature》2005,437(7060):855-858
Gamma-ray bursts (GRBs) fall into two classes: short-hard and long-soft bursts. The latter are now known to have X-ray and optical afterglows, to occur at cosmological distances in star-forming galaxies, and to be associated with the explosion of massive stars. In contrast, the distance scale, the energy scale and the progenitors of the short bursts have remained a mystery. Here we report the discovery of a short-hard burst whose accurate localization has led to follow-up observations that have identified the X-ray afterglow and (for the first time) the optical afterglow of a short-hard burst; this in turn led to the identification of the host galaxy of the burst as a late-type galaxy at z = 0.16 (ref. 10). These results show that at least some short-hard bursts occur at cosmological distances in the outskirts of galaxies, and are likely to be caused by the merging of compact binaries. 相似文献