APF activity in urine from Chinese interstitial cystitis patients with Hunner's ulcers (IC-U), Chinese interstitial cystitis patients without Hunner's ulcers (IC-N), normal controls (Ctr), and patients with bacterial cystitis (BC), or bladder cancer (BCa). APF activity was measured as inhibition of 3H-thymidine incorporation in normal bladder epithelial cells. Each data point indicates the mean change in incorporation, with each specimen tested in triplicate. Horizontal line indicates value of mean; vertical line indicates standard error of the mean for each group.
Zhang et al. BMC Urology 2005 5:7 doi:10.1186/1471-2490-5-7