Table 2.
Deduced volumes of the mature SAMs on the basis of 3-D reconstructions
| Histological zone | Voxel count | Volume (μm3) | % ZC vs. Dome | |
|---|---|---|---|---|
| Mer1 | Dome | 1064 898 | 6978 915 | |
| ZC | 294 462 | 1929 786 | 27·65 | |
| Mer2 | Dome | 939 926 | 6159 899 | |
| ZC | 196 129 | 1285 351 | 20·87 | |
| Mer3 | Dome | 765 490 | 5016 715 | |
| ZC | 153 457 | 1005 696 | 20·05 |
Abbreviations: CZ, central zone; Dome, whole meristematic dome. Voxel count is the number of voxels (i.e. volumetric pixels) in a defined 3-D zone. Volumes were calculated according to the voxel size of the reconstructions (1·28 µm for the width and height according to the image resolution, 4 µm for the depth according to the thickness of the sections). Mer1, mer2 and mer3 correspond to SAM reconstructions shown in Fig. 4A, B and C, respectively.