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Figure Caption
Fig. S1 Bmp signaling is active in the mesoderm progenitor zone. Active Bmp signaling (red) is principally active in the dorsal-posterior region of the tailbud, where expression of no tail (green) marks the mesoderm progenitor zone. The strongest ntl expression is in the notochord (see Fig. 1A). Shown is a confocal section at the midline of a 3-somite tailbud with dorsal at top and posterior at right.
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Reprinted from Developmental Biology, 329(1), Row, R., and Kimelman, D., Bmp inhibition is necessary for post-gastrulation patterning and morphogenesis of the zebrafish tailbud, 55-63, Copyright (2009) with permission from Elsevier. Full text @ Dev. Biol.