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. 2012 Mar;4(3):192–205. doi: 10.1002/emmm.201100199

Figure 2. Palatal shelf hypoplasia and reduced epithelial cell proliferation in p63+/L514F embryos.

Figure 2

  1. H&E staining of coronal sections of p63+/L514F mid palate at E13.5 reveals grossly similar morphology of palatal shelves compared to controls. t, tongue; p, palatal shelf; tb, molar tooth bud; m, mandible. Scale bar: 200 µm.
  2. H&E and Alcian Blue staining of coronal sections of p63+/L514F mid palate at E14.5 reveals a failure of the palatal shelves to meet in the horizontal plane. nc, nasal cavity. Scale bar: 200 µm.
  3. A closer view of H&E staining of E13.5 coronal sections reveals that mutant palatal shelves are hypoplastic compared to controls. Scale bar: 50 µm.
  4. Quantification of the anterior, mid and posterior palatal shelf area. Error bars represent standard deviation (SD). Anterior palate *p-value = 0.00032; n = 9. Mid palate *p-value = 0.00079; n = 9. Posterior palate p-value = 0.0097; n = 9.
  5. Immunofluorescence with anti-BrdU antibodies at E13 (left panel) reveals reduced proliferation of mutant palatal shelves.
  6. The average percentage of BrdU incorporation is reduced in mutant palatal epithelium at E13 and E13.5. Epithelium at E13 p-value = 0.009; n = 9. Mesenchyme at E13 p-value = 0.032; n = 9. Epithelium at E13.5 p-value = 0.018; n = 9. Data are represented as mean ± SD. Scale bar: 50 µm.
  7. Double immunofluorescence staining for the indicated markers reveals hypoplasia and disorganization of the palatal shelf epithelium at E13.5. Scale bar: 20 µm.
  8. Palatal explant culture assay reveals that mutant palatal shelves fuse appropriately. Palatal shelves freshly isolated at E13.5 were placed in contact and cultured for 48 h. ne, nasal epithelium; oe, oral epithelium.