نتایج جستجو برای: 554 521 and 106
تعداد نتایج: 16831328 فیلتر نتایج به سال:
We present high sensitivity radio observations of the merging cluster A 521, at a mean redsfhit z=0.247. The observations were carried out with the GMRT at 610 MHz and cover a region of ∼1 square degree, with a sensitivity limit of 1σ = 35 μJy b−1. The most relevant result of these observations is the presence of a radio relic at the cluster periphery, at the edge of a region where group infall...
Laminins, a large family of αβγ heterotrimeric proteins mainly found in basement membranes, are strong promoters of adhesion and migration of multiple cell types, such as tumor and immune cells, via several integrin receptors. Among laminin α (LMα) chains, α5 displays the widest tissue distribution in adult life and is synthesized by most cell types. Here, we have generated and characterized fi...
Correct interactions with extracellular matrix are essential to human pluripotent stem cells (hPSC) to maintain their pluripotent self-renewal capacity during in vitro culture. hPSCs secrete laminin 511/521, one of the most important functional basement membrane components, and they can be maintained on human laminin 511 and 521 in defined culture conditions. However, large-scale production of ...
Background: According to World Health Organization guideline (WHO 2010), seminal leukocyte concentration over 1×106/mL is a threat for sperm quality because of their role in reactive oxygen species (ROS) production, lipid per-oxidation (LPO) and later DNA fragmentation (DF). However, this threshold is equal for all semen samples without attention to their qualities. Therefore this study was set...
Reactions of photosynthetic electron transport and photophosphorylation were studied in preparations from the blue-green alga, Phormidium luridum. Osmotic lysis of protoplasts proved to be a superior technique for the production of cell-free preparations with high enzymatic activity. Such lysed protoplasts sustain high rates of photophosphorylation coupled to the photo-reduction of NADP(+) or f...
نمودار تعداد نتایج جستجو در هر سال
با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید