一般是指信号传导途径,这是由一些激酶所构成的级联反应途径,可以对内外环境的变化起到响应作用,分直接的影响细胞内的某些代谢途径,间接地则会影响细胞核的一些基因的表达,这些基因最终还是会影响细胞的生理,代谢等变化。原材料被a基因编码的蛋白质1转化为产物a,再被b基因编码的蛋白质2转化为产物b…以此类推这个过程叫做pathway,中断任何一环都无法继续途径,通路。就是途径的意思,是一个过程就是通路 or 途径的意思.A biological pathway is a series of actions among molecules in a cell that leads to a certain product or a change in a cell. Such a pathway can trigger the assembly of new molecules, such as a fat or protein. Pathways can also turn genes on and off, or spur a cell to move.