图 2. 腭胚突发育的冠状面观察 HE × 40.
Fig 2 Coronal observation of palatal development HE × 40
A~D依次为：对照组E13.5、E14.5、E15.5、E17.5。a~d依次为：DEX组E13.5、E14.5、E15.5、E17.5。
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