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Figure 10


Fig. 10. LR Cai2+ levels in VAS or VAD quail embryos. Fura-2-loaded HH6 embryos were imaged ventrally, anterior to the top. (A,B) The upper panel shows a representative Fura-2 image; the lower panel presents the line-scan quantitation of fluorescent intensity versus the right-left axis for that embryo, at the position indicated by the yellow line in the upper panel. Asterisk indicates Hensen's node. (A) VAS, vitamin A sufficient. (B) VAD, vitamin A deficient.