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. Author manuscript; available in PMC: 2008 Jun 20.
Published in final edited form as: Dev Dyn. 2006 May;235(5):1300–1309. doi: 10.1002/dvdy.20655

Fig. 4.

Fig. 4

Images of p63 and T/ebp expression in the ultimobranchial body (UBB) and thyroid diverticulum of wild-type embryos. A: The p63 immunostaining can be detected in thyroid diverticulum as well as UBB (arrowheads, shown in brown) in transverse sections of embryonic day (E) 13.5 embryo. Dorsal is up. Thy, thyroid diverticulum. B,C: Immunostaining for T/ebp and p63 (both shown in brown) using serially prepared E14.5 embryo transverse sections. Dorsal is up. The UBB has already been fused but has not yet been completely incorporated into the thyroid diverticulum at this stage. The thyroid diverticulum begins to form many primitive follicles (B, arrowheads) with high levels of T/ebp expression, making a sharp contrast to solid appearance and faint T/ebp expression of partly fused UBB (B, C, arrows). C: P63-positive cells are sparsely distributed in both UBB and primitive thyroid follicles (arrowheads). PT, parathyroid. Scale bar = 50 μm in A,100 μm in B,C.