Fig. 8. Cyclin B levels remain high in ida cells with anaphase chromosome positioning. Hoechst staining (A-D) and cyclin B staining (E-H) in wild-type (A,E,C,G), and ida¹⁰⁷ (B,F,D,H) cells is presented. In wild-type, cyclin B levels are high at prometaphase (E), but are reduced at anaphase (G). ida¹⁰⁷ mutant cells contain high cyclin B levels during prometaphase (F) in a pattern similar to wild-type. High cyclin B levels are retained during anaphase in most ida¹⁰⁷ cells (H).