Fig. 5.

Semi-quantitative analysis of the immunohistologically stained sections of implanted grafts and native ovine ACL at each time point. For cell markers the number of positive cells per high power field of view (40× objective; 400× magnification) were counted and scored: 0 for no cells; 1 (rare) for 1–5 cells; 2 (moderate) for 6–10 cells; 3 (marked) for a heavy infiltrate and 4 (packed) for packed cells. For matrix proteins (tenascin C and collagen III) sections were scored 0 (absent), 1 (slight) 2 (moderate), 3 (strong) and 4 (intense). Data are presented as mean (n = 4) ± SD.