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In situ hybridization with Dicer1 probe at E12.5. a-b. Head. c-d. Palate. e-f. Brain. HB: hindbrain; MB: midbrain; FB: forebrain; PP: primary palate; PS: palatal shelves; NC: nasal cavity. Bar = 50 μm (a–d); 2 mm (e–f). Palatal rim delineated
