What becomes of an embryonic cell that does not have a defined identity depends on its location. And to determine the location, the cell draws on the morphogen Hedgehog. The newspaper Correo Médico echoes the work of Andreu Casali, IRB Barcelona researcher in the Development and Morphogenesis in Drosophila Laboratory, that explains how the morphogen and the embryonic cell interact in the wing development of the fruit fly.

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