Spemann, Hans

Hamburger, V. (1988). The heritage of experimental embryology Hans Spemann and the organizer, pp. 196. Oxford University Press, New York and Oxford. 

We thank the Nobel Foundation for letting us reproduce their photographs of Melvin Calvin, Tom Cech, Edward Lewis, Thomas Hunt Morgan, Erwin Neher, Christiane Nusslein-Volhard, Bert Sakmann, Hans Spemann and Eric Weischaus. Photographs of Frederick Steward (Annu. Rev. Plant Physiol. 12, 1971) and Dan Koshland (Annu. Rev. Biochem. 65, 1996) are reproduced with permission from Annual Reviews Inc. 

At the beginning of the twentieth century, Hans Spemann made one of the most important discoveries of embryology. He was able to prove that the differentiation of developing cells - i.e. the actual expression of specific proteins - is always preceded by a process that determines the fate of those cells. Spemann made the discovery by studying what... 

Spemann s organizer. In 1924, the German physiologist Hans Spemann with Hilde Mangold transplanted a small piece of tissue from the dorsal lip of a newt blastula to a site on the ventral side of an early blastula of a differently colored species. The embryo developed a small secondary embryo, most of the tissues of which came from the host, not from the transplanted piece. It was concluded from this famous experiment that the transplanted vegetal tissues had supplied a diffusible inducer. 44337 339 qyjjg morpho-... 

Figure 38 The Skill of Student Hilde Mangold and the Vision of Professor Hans Spemann United. [2347] Reference Appendix 2, Explanations to the Figures...

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