PURPOSE: To obtain a pre-expanded and uniformly colored styrene resin bead providing an expansion molded article having excellent appearance by pre- expanding a colored expandable styrene resin bead produced by an extrusion granulation method and breaking the fine bubbles on the cut surface.YAMASHITA ...
premRNA的剪切是通过切除内含子并连接外显子，形成成熟mRNA的过程。2目的 剪切过程可以修改mRNA的编码序列，增强基因功能和多样性，影响基因表达和蛋白质产生。premRNA的剪切机制 1 剪切酶 剪切酶通过识别剪切位点，切除内含子，然后连接外显子，完成剪切过程。2 剪切位点 剪切位点是剪切酶切除内含子和连接外显子的...