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Cyclin D1 is involved in cell-cycle arrest in DNA-damage response. This study tested the hypothesis that cyclin D1 regulates mitochondrial apoptosis. Cyclin D1 was induced by low-dose ionizing radiation (LDIR; 10-cGy X-ray) in human keratinocytes with an adaptive radioresistance that can be inhibited by short interfering RNA (siRNA)-mediated cyclin D1(More)
The hemangioblast hypothesis has been hotly debated for over a century. Hemangioblasts are defined as multipotent cells that can give rise to both hematopoietic cells and endothelial cells. The existence of hemangioblasts has now been confirmed and many important molecules and several signaling pathways are involved in their generation and differentiation.(More)
Mixtures of alginate and hydroxyapatite (HA) are promising materials for biomedical applications such as the fabrication of tissue scaffolds. In this paper, the flow behavior of alginate/HA mixtures was investigated and determined to be dependent on the concentration of both alginate and HA, and temperature. The relationships were mathematically established(More)
Myelination by oligodendrocytes facilitates rapid nerve conduction. Loss of oligodendrocytes and failure of myelination lead to nerve degeneration and numerous demyelinating white matter diseases. N-methyl-d-aspartate (NMDA) receptors, which are key regulators on neuron survival and functions, have been recently identified to express in oligodendrocytes,(More)
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