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Many studies have shown that the magnetic resonance signal decay with an extend range of diffusion weighting (b-factor) is a bi-exponential attenuation in the diffusion-weighted magnetic resonance imaging experiments in vivo. Based on this feature and the two-compartmental model, we propose a twice-linear-fitting (TLF) algorithm to estimate the apparent diffusion coefficient (ADC) of the water molecules...
By combining the knowledge from KEGG database and literatures, we construct a comprehensive gene network for human mitochondria. The network comprises 2442 genes of 9 functional categories, including metabolism, development, immune, and apoptosis, etc. Topological analysis reveals that the network is scale free. The hubs of high degrees are mostly the genes of apoptosis. Three big modules are found...
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