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Fig. 7. Microscopic analysis of msi1-2/MSI1 and msi1-2/msi1-2 seeds. (A,B) WT embryo at dermatogen and mid heart stage, respectively. em: embryo proper, su: suspensor. (C) Cellularised endosperm in a WT seed at the same stage as in B. (D,E) msi1-2/MSI1 embryos in same siliques as A and B, respectively. (F) Endosperm is not cellularised in a msi1-2/MSI1 seed at the same stage as in C. (G,H) msi1-2/msi1-2 embryos in same siliques as A and B, respectively. (I) Endosperm is not cellularised in a msi1-2/msi1-2 seed at the same stage as in C. Nucleoli are variable in size. Scale bars: 50 µm.