图 3. 腭胚突发育的表面观察 SEM × 2 000.
Fig 3 Surface observation of palatal development SEM × 2 000
A~E次为：对照组E13.5、E14.0、E14.5、E15.5、E17.5。a~e依次为：DEX组E13.5、E14.0、E14.5、E15.5、E17.5。
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