Comparison of the effects of the NSAIDs and their metabolites upon the initial activity of COX-1.

Initial activities were calculated as the change in oxygen tension between 10 and 30 seconds after start of reaction. The values are means ± s.e.m., n = 3.

初始活性通过反应起始后10至30秒内的氧张力变化计算得到。数据以平均值±标准误（standard error of the mean, s.e.m.）表示，样本量n=3。