Functional conservation of Asxl2, a murine homolog for the Drosophila enhancer of trithorax and polycomb group gene Asx.

BackgroundPolycomb-group (PcG) and trithorax-group (trxG) proteins regulate histone methylation to establish repressive and active chromatin configurations at target loci, respectively.These chromatin configurations are passed on from mother to daughter cells, thereby causing heritable changes in gene expression.The activities of PcG and trxG prote

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Study on the best time of refracturing for Hancheng coal seam

The old wells in Hancheng Block face the problem of production decline after long-term exploitation, and need to be re-fractured to form new fractures to communicate with CBM rich areas, so Bar Collar as to achieve stable CBM production.Due to the small difference of initial stress in coal seam, the magnitude and direction of in-situ stress change

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