part of mitotic domain mitotic domain 14 FBbt:00000073 mitotic domain delta14-14 fly_anatomy.ontology mesectodermal cells See figure 1 of Foe (1989) for an atlas of mitotic domains. In each half of the embryo, this mitotic domain consists of a row of one or two cells wide immediately lateral to the ventral furrow. The two rows of cells that form this domain lie on opposite sides of mitotic domain 10 in the blastoderm-stage embryo, but are brought together at the ventral midline when domain 10 invaginates. stage 8 embryo