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Example sentences for: factor-
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Following cell thaw, NSs were expanded in suspension culture, and in each case were used between passages 5 and 7. Undifferentiated human NS cells (stage 1) were cultured and expanded in medium containing X-VIVO15 (Cambrex, Walkersville, Maryland, United States), N2 supplement (Invitrogen, Carlsbad, California, United States), 2 μg/ml heparin, 10 ng/ml leukemia inhibitory factor (Chemicon, Temecula, California, United States), 20 ng/ml epidermal growth factor (R&D Systems, Minneapolis, Minnesota, United States), and 20 ng/ml fibroblast growth factor-2 (R&D Systems), and they were frozen after enzymatic dissociation.
Several other HMG-box proteins also play important roles in lymphocyte development [ 17 ] . Mice doubly deficient in lymphocyte enhancement factor-1 (LEF-1) and T cell factor-1 (TCF-1) have a complete block in development of T cells [ 18 19 ] , while deficiency of SRY-box containing protein 4 (SOX-4) in mice results in a lack of pro-B cell expansion and mild perturbation of thymocyte development [ 20 ] . Unlike these HMG-box proteins, however, we find that the HMG-box of TOX is more closely related to the DNA binding domain of sequence-independent HMG-box proteins.
An inhibitory effect of USF on Myc-mediated cellular proliferation has been demonstrated in HeLa cells [ 33 ] , and a non-canonical HLH element inhibits expression of the fibroblast growth factor binding protein (FGF-BP) in several carcinoma cells [ 34 ] . Furthermore, USF2 inhibits binding of hypoxia-inducible factor-1 (HIF-1) to the plasminogen activator inhibitor -1 (PAI-1) gene in hepatocytes in order to disturb transcriptional activation [ 35 ] . Our results add C/EBPβ-mediated activation of RIIβ to the mechanisms inhibited by USF.
Thus, simultaneous exposure to high glucose levels, insulin-like growth factor-1, and nicotinamide optimized insulin expression at stage 4. Comparable results were obtained with three independently derived NS lines.
In transfection assays, full-length constructs of three splice variants of an endogenous coding transcript containing regions antisense to the FGF2 (fibroblast growth factor-2) mRNA can each suppress protein levels (but not mRNA levels) of FGF2 [ 7].
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