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Proposed Equivalences in Ferret and Mouse Embryo Ages
| Ferret Age | Equivalent Mouse Age, Overall | Corresponding Theiler stage | Corresponding Carnegie stage | Equivalent Mouse Age, Telencephalon |
| E17 | E9.5 | T15 | 12 | E9.0 |
| E18 | E10.0 | T16 | 13 | E9.5 |
| E19 | E10.5 | T17 | 14 | E10.0 |
| E22 | E12.0 | T20 | 17 | E11.5 |
| E23 | E12.5 | T20-21 | 17-18 | E12.0 |
Carnegie stages in human corresponding to Theiler mouse stages are those estimated by Theiler.
