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Figure 3. Expression of Fermt1 from stages 12 to 35. A:Fermt1 expression at stage 12, 15, and 18, respectively. Expression in the ectoderm is clearly seen in transverse section. D: Fermt1 expression is detected throughout the ectoderm and weakly in the somites at stage 22. E: At stage 28, Fermt1 becomes restricted to a number of ectodermal derivatives, including otic, olfactory, and pharyngeal placodes, and pronephric anlage. F: By stage 35, Fermt1 transcripts are detected in the otic vesicle (black arrow), olfactory pit (black asterisk), heart (back arrowhead), and in the pronephric duct (white arrowhead). G: Transverse sections are observed through the level of the eye/olfactory pit (G), the otic vesicle (H), and the pronephric duct (I). Inset (F) demarcates the levels at which sections were analysed (G). |
