But there is one internalprotein, called M2, that protrudes a bit from the virus.
不过,病毒中有一种被称为M2的内在蛋白质突出来了一点。
2
Each cell is linked to this matrix by proteins in its membrane called integrins, and the cell's internalprotein skeleton is constantly tugging on these integrins to create a taut, tuned whole.