monopolar mitotic spindle monopolar mitotic spindle nucleated from old spindle pole body monopolar mitotic spindle nucleated from old SPB 2018-06-25T12:07:05Z monopolar mitotic spindle nucleated from old spindle pole body during vegetative growth midori A physical cellular phenotype in which the mitotic spindle forms with microtubules emanating from only one pole, nucleated from the old spindle pole body. FYPO:0006592 monopolar mitotic spindle nucleated from old spindle pole body during mitotic cell cycle abolished mitotic spindle microtubule nucleation from spindle pole body