substage of embryonic cycle 14 embryonic cycle 14B FlyBase_development_CV The M-phase of embryonic cycle 14. This is asynchronous across the embryo, but occurs synchronously within discrete domains, known as mitotic domains. Temporal ordering number - 257. Not to be confused with mitotic domain 14B, which is a domain of cells in the dorsal midline of the head that don't undergo a 14th division (Foe, 1989). The asynchronous nature of cycle 14 divisions means that this is not very useful for annotating stage. If possible a standard embryonic stage should be used instead. FBdv:00005314 embryonic cycle 14 M-phase embryonic cycle M-phase