Average properties of MT PFs
| Organism/cell type | Stages studied | No. cells | No. KMTs | No. PFs | Length | Curve | No. non- KMTs | No. PFs | Length | Curve |
| nm | nm | |||||||||
| C. reinhardtii | Metaphases | 2 | 77 | 702 | 42 ± 15 | 19 ± 9 | 64 | 407 | 39 ± 12 | 18 ± 10 |
| Anaphases | 3 | 40 | 362 | 54 ± 14 | 17 ± 7 | 50 | 407 | 38 ± 16 | 21 ± 9 | |
| C. elegans | Metaphases | 1 | 49 | 321 | 44 ± 17 | 18 ± 8 | 171 | 579 | 38 ± 14 | 21 ± 11 |
| Blastomeres | Anaphases | 1 | 66 | 467 | 49 ± 18 | 18 ± 8 | 18 | 123 | 34 ± 12 | 20 ± 10 |
| S. pombe | Prometa/metaphases | 3 | 49 | 332 | 33 ± 12 | 24 ± 9 | 40 | 346 | 30 ± 12 | 20 ± 11 |
| Anaphases | 3 | 8 | 60 | 40 ± 21 | 18 ± 8 | 30 | 214 | 32 ± 13 | 12 ± 8 | |
| S. cerevisiae | Prometaphases | 3 | 113 | 823 | 29 ± 12 | 24 ± 14 | NA | NA | NA | NA |
| Early metaphases | 5 | 141 | 939 | 37 ± 14 | 20 ± 11 | NA | NA | NA | NA | |
| Metaphases | 3 | 63 | 456 | 27 ± 11 | 23 ± 13 | NA | NA | NA | NA | |
| Anaphases | 3 | 85 | 546 | 31 ± 12 | 26 ± 16 | 15 | 88 | 30 ± 12 | 21 ± 13 | |
| Totals | 27 | 691 | 5,008 | 338 | 2,164 |
| Organism/cell type | Stages studied | No. cells | No. KMTs | No. PFs | Length | Curve | No. non- KMTs | No. PFs | Length | Curve |
| nm | nm | |||||||||
| C. reinhardtii | Metaphases | 2 | 77 | 702 | 42 ± 15 | 19 ± 9 | 64 | 407 | 39 ± 12 | 18 ± 10 |
| Anaphases | 3 | 40 | 362 | 54 ± 14 | 17 ± 7 | 50 | 407 | 38 ± 16 | 21 ± 9 | |
| C. elegans | Metaphases | 1 | 49 | 321 | 44 ± 17 | 18 ± 8 | 171 | 579 | 38 ± 14 | 21 ± 11 |
| Blastomeres | Anaphases | 1 | 66 | 467 | 49 ± 18 | 18 ± 8 | 18 | 123 | 34 ± 12 | 20 ± 10 |
| S. pombe | Prometa/metaphases | 3 | 49 | 332 | 33 ± 12 | 24 ± 9 | 40 | 346 | 30 ± 12 | 20 ± 11 |
| Anaphases | 3 | 8 | 60 | 40 ± 21 | 18 ± 8 | 30 | 214 | 32 ± 13 | 12 ± 8 | |
| S. cerevisiae | Prometaphases | 3 | 113 | 823 | 29 ± 12 | 24 ± 14 | NA | NA | NA | NA |
| Early metaphases | 5 | 141 | 939 | 37 ± 14 | 20 ± 11 | NA | NA | NA | NA | |
| Metaphases | 3 | 63 | 456 | 27 ± 11 | 23 ± 13 | NA | NA | NA | NA | |
| Anaphases | 3 | 85 | 546 | 31 ± 12 | 26 ± 16 | 15 | 88 | 30 ± 12 | 21 ± 13 | |
| Totals | 27 | 691 | 5,008 | 338 | 2,164 |
“Curve” means curvature in degrees of bend per dimer. Values are means ± SD. Non-KMTs are not reported in early mitotic cells from S. cerevisiae because all MTs until anaphase were assumed to be KMTs. After anaphase had begun, ipMTs were evident and are listed.