Journal
NATURE
Volume 413, Issue 6858, Pages 797-803Publisher
MACMILLAN PUBLISHERS LTD
DOI: 10.1038/35101500
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A morphogen gradient is an important concept in developmental biology, because it describes a mechanism by which the emission of a signal from one part of an embryo can determine the location, differentiation and fate of many surrounding cells. The value of this idea has been clear for over half a century, but only recently have experimental systems and methods of analysis progressed to the point where we begin to understand how a cell can sense and respond to tiny changes in minute concentrations of extracellular signalling factors.
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