American Association for Cancer Research

Table 1

Expression of COX-2 in 50 glioma patients, as determined by immunohistochemistry

A. Score of positive tumor cells^a
	0	1	2	3	4
GBM	0	0	1	8	16
AA	0	0	4	5	1
LOW	3	3	8	1	0

A. Score of positive tumor cells^a
	0	1	2	3	4
GBM	0	0	1	8	16
AA	0	0	4	5	1
LOW	3	3	8	1	0

Percentage of positive cells:0 (0–4%); 1 (5–14%); 2 (25–49%); 3 (50–74%); 4 (75–100%).

Staining intensity: 0 (negative);1+ (weak); 2+ (strong).

Immunoreactive score: combination of A and B (see “Materials and Methods”).