| A midzone-based ruler adjusts chromosome compaction to analphase spindle length | 6 |
| 11 / 2012 | 12 / 2012 | 01 / 2013 | 02 / 2013 | 03 / 2013 | 04 / 2013 | 05 / 2013 | |
| A midzone-based ruler adjusts chromosome compaction to analphase spindle length | 2 | 0 | 1 | 2 | 0 | 0 | 1 |
| 1 | United States of America | 3 |
| 2 | Canada | 2 |
| 3 | Hong Kong | 1 |
| 1 | Toronto | 2 |
| 2 | Central District | 1 |
| 3 | Redwood City | 1 |
| 4 | Woodbridge | 1 |