Figure 3. Morphometric study of the developing condylar cartilage. Comparison of cartilage volume (A,C), and total number of cells (B,D) between the non-sutured and sutured groups at E16.5 (A, B; N = 3) and E18.5 (C, D; N = 7). (E) BrdU-positive cells and (F) BrdU-labeling indices at E16.5 (N = 3). For the details, see RESULTS. M, mesenchymal zone; P, pre-hypertrophic zone; H, hypertrophic zone; , non-sutured group; , sutured group; data are represented as mean ± SD.