in the embryo 12 hours after treatment , abnormal mitotic cells exhibiting vesiculation of the endoplasmic reticula , and abnormal interphase cells characterized by the ring-shaped nucleoli in the nucleus and the enlargement of cisternae of the endoplasmic reticula and the nuclear envelope , were observed in the neuroectoderm and the mesoderm .
C0007610
nucleus
C0028584
nuclear envelope