نتایج جستجو برای: quiescent zone
تعداد نتایج: 122019 فیلتر نتایج به سال:
in order to investigate the role of multi-wall carbon nanotubes (mwcnts) on fracture mechanism of epoxy nanocomposites, a series of tensile standard specimens reinforced with different carbon nanotube contents (0, 0.3, 0.6 and 1 wt%) were produced. the fracture surfaces of the produced nanocomposites were evaluated using scanning electron microscope (sem). the results show that the surface frac...
We have examined the ability of the yeasts Schizosaccharomyces pombe and Saccharomyces cerevisiae to enter a quiescent state through G1, S, G2, or M phase of the cell cycle. We monitored entry to a quiescent state by measuring two well known properties of quiescent cells, i.e., long-term viability and a dramatic increase in resistance to thermal heat shock relative to cycling cells. For this pu...
Proteasome inhibition is used as a treatment strategy for multiple types of cancers. Although proteasome inhibition can induce apoptotic cell death in actively proliferating cells, it is less effective in quiescent cells. In this study, we used primary human fibroblasts as a model system to explore the link between the proliferative state of a cell and proteasome inhibition-mediated cell death....
این تحقیق به بررسی زیست چینه نگاری نهشته های سازند بهرام به سن دونین پسین در برش چاه ناصر و حادثه زیستی کلواسر مرتبط با مرز فرازنین- فامنین می پردازد. سازند بهرام یک واحد سنگی است که شامل سنگ آهک لایه لایه خاکستری متمایل به آبی دارای سنگواره های مرجان، گاستروپود، تنتاکولیت، استراکود، بقایای ماهی و به ویژه براکیوپود فراوان می باشد. در برش الگو مرز زیرین سازند بهرام با دولومیت سیبزار تدریجی است و...
Statin has previously been identified to be a 57-kD protein present in the nuclei of quiescent and senescent human fibroblasts, but not in their replicating counterparts (Wang, E. 1985. J. Cell Biol. 100: 545-551). In the present report we demonstrate by immunoprecipitation analysis of fractionated cellular extracts the existence of two populations of statin. The Triton X-100-soluble statin is ...
We describe effects of serum insufficiency and cell contact on the transcription and abundance of the c-myc proto-oncogene mRNA in BALB/c 3T3 fibroblasts. In exponentially growing cells, withdrawal of serum caused a 10-fold decline in c-myc mRNA within 90 min. At least part of this decline was due to a decrease in the level of myc gene transcription. These cells became quiescent at subconfluenc...
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