Table 2. Barbed end, branch and filament number for fibroblast cells in Vinzenz et al., 2012 and keratocyte cells from Mueller et al., 2017 for lamellipodia region of 1µm.
Since the leading edge is not well defined in the EM tomograms, we consider the leading edge to begin at the maximum barbed end value but we also include the number of barbed ends that would be considered outside the cell (with this definition) in the region of 0–0.212 µm.
| Quantity | Fibroblast | Fibroblast | Keratocyte | Keratocyte |
|---|---|---|---|---|
| Region (µm) | Value (µm-1) | Region (µm) | Value (µm-1) | |
| Barbed ends (first bin) | 0–0.25 | 145 | 0–0.212 | 309 |
| Barbed ends (second bin) | 0.25–0.5 | 42.5 | 0.212–0.424 | 238 |
| Branches (first bin) | 0–0.25 | 37.5 | N/A | N/A |
| Branches (second bin) | 0.25–0.5 | 37.5 | N/A | N/A |
| Pointed ends (first bin) | N/A | N/A | 0–0.212 | 91 |
| Pointed ends (second bin) | N/A | N/A | 0.212–0.424 | 231 |
| Filaments (first bin) | 0–0.25 | 150 | 0–0.106 | 200 |
| Filaments (second bin) | 0.25–0.5 | 130 | 0.106–0.212 | 256 |