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The establishment of spemann's organizer and patterning of the vertebrate embryo | Nature Reviews Genetics
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The Heritage of Experimental Embryology: Hans Spemann and the Organizer (Monographs on the History and Philosophy of Biology): 9780195051100: Hamburger, Viktor: Books - Amazon.com
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Spemann-Mangold organizer secreted factors antagonize ventral signals... | Download Scientific Diagram
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Bighead is a Wnt antagonist secreted by the Xenopus Spemann organizer that promotes Lrp6 endocytosis | PNAS
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