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Fig. 3. Expression of Psf1. All embryos are oriented anterior to the left and dorsal to the top, except those in (C) and (D), which are dorsal views oriented
anterior to the top. (A) Stage 13 embryo. Arrowheads demarcate anterior regions of expression. (B) Stage 22 embryo. Arrowheads demarcate posterior
expression of Psf1. (C) Stage 33 embryo. The bracket demarcates the right half of the CNS, and the left margin of the bracket aligns with the inner boundary of
the ventricular zone. (D) Stage 37 embryo. (E) Stage 26 embryo. (F) Stage 33 embryo. (G) Stage 37 embryo. (H) Section through a stage 37 embryo at the level
of the forebrain, with the dorsum oriented to the left. Note the intense stain in the ventricular zone of the CNS, and a lesser degree of expression within the rest
of the CNS. Expression can also be seen in the lens, the lining of the pharynx, and the ciliary marginal zone of the retina. (I) Sense control stage 33 embryo. (J)
Sense control stage 37 embryo. m/h: midbrain/hindbrain boundary, pn: pronephros. All other labels follow that listed in the legend to Fig. 1. The scale bar in
(G) equals 380 mm in A, 550 mm in (B), (E–G), (I and J), 200 mm in (C) and (D), and 100 mm in (H). |
