藿香鲫鱼
逸闻轶事Chromatin accessibility is a measure of how open or clod a region of DNA is to transcription factors and other proteins that interact with DNA. It is determined by the degree of compaction of the chromatin, which is the combination of DNA and proteins that make up chromosomes. Chromatin accessibility can be measured using techniques such as chromatin immunoprecipitation (ChIP) or DNa-q. High levels of chromatin accessibility are associated with incread gene expression, while low levels of chromatin accessibility are associated with decread gene expression.团支书竞选演讲稿
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