abnormal nuclear envelope morphology during mitosis abnormal nuclear envelope morphology at mitotic nuclear bridge 2020-09-07T15:17:01Z abnormal nuclear envelope morphology at mitotic nuclear bridge during mitotic cell cycle midori abnormal nuclear envelope morphology at mitotic nuclear bridge during vegetative growth FYPO:0007459 A physical cellular phenotype observed in the vegetative growth phase of the life cycle in which the size, shape, or structure of the portion of the nuclear envelope enclosing the mitotic nuclear bridge is abnormal. The nuclear bridge is a narrow constricted region of the nucleus that forms around the mitotic spindle during anaphase.