FIGURE 6.

Distribution of mitochondria from cultured and bovine chromaffin cells present in the adrenal medulla. Mitochondria (asterisks) were identified in EM micrographs and their distribution was studied in individual cultured cells (A) and in cells in adrenomedullary slices (B). These images were used to calculate the position of the mitochondria with respect to the cell membrane in order to generate a distribution of mitochondria as depicted for a sample cultured cell (C) and one in the tissue (E). Mitochondrial distributions were used to obtain the averaged distributions for cultured cells (D, n = 12 and 224 mitochondria) and cells in the adrenal tissue (F, n = 10 cells and 247 mitochondria). Curves in (D,F) correspond to the best fit to binomial distributions. Bars in (A,B) represent 2 μm.