Research Article

The Upregulation of COX2 in Human Degenerated Nucleus Pulposus: The Association of Inflammation with Intervertebral Disc Degeneration

Figure 4

The expression of COX2 between human white and black discs of the patients. (a) The percent of COX2+ cells in total cell population between human degenerated and nondegenerated NP tissues. (b) The IOD/cell number of COX2 between human degenerated and nondegenerated NP tissues. D: degenerative (black) discs; ND: nondegenerative (white) discs. represents , and represents .