In all the discs, including nonpunctured control discs, protein gene product 9.5-immunoreactie fibers were only occasionally obsered in the outermost part of the anulus fibrosus.

• 在包括未穿刺的对造组在内的所有椎间盘中，9.；5蛋白基因产物的免疫反应纤维只是偶尔在环状纤维的最外边被观察到。