Figure 4P and 4Q: Time course of CD44 expression. Representative photomicrographs of CD44 in renal tissue of control rat P: Semi-quantitative scoring of CD44 immunostaining in OSOM in control, SHAM- or AA-treated rats at different time-points after treatment. Q: Semi-quantitative analysis of CD44-positive interstitial cells in OSOM in control, SHAM- or AA-treated rats at different time-points after treatment .