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Comparative palatal development. a, c, e. WT. b, d, f. Dicer1 CKO. NT: neural tube; MP: mandibular process; PS: palatal shelves; OC: oral cavity; P: secondary palate; NS: nasal septum; T: tongue. Bar = 1mm (a, b); 500 μm (c-f). H and E staining
