Look up: morphogen

1. morphogen
   Diffusible substance that carries information relating, for example, to position in the embryo, and thus determines the differentiation that cells perceiving this information will undergo.
   Found on http://www.encyclo.co.uk/visitor-contrib
   
   
2. morphogen
   <embryology> Diffusible substance that carries information relating, for example: to position in the embryo and thus determines the differentiation that cells perceiving this information will undergo. ... (18 Nov 1997) ...
   Found on http://www.mondofacto.com/facts/dictiona
   
   
3. morphogen
   Type: Term Pronunciation: mōr′fō-jen Definitions: 1. A soluble molecule secreted at a distance from the target cells that specifies the fates of cells. A morphogen may specify more than one cell type by forming a concentration gradient.
   Found on http://www.medilexicon.com/medicaldictio
   
   
4. morphogen
   In medicine, one of a class of substances believed to be present in the growing embryo, controlling its growth pattern. It is thought that variations in the concentration of morphogens in different parts of the embryo cause them to grow at different rates
   Found on http://www.talktalk.co.uk/reference/ency
   
   
5. Morphogen
   A `morphogen` is a substance governing the pattern of tissue development, and the positions of the various specialized cell types within a tissue. It spreads from a localized source and forms a concentration gradient across a developing tissue. In developmental biology a morphogen is rigorously used...
   Found on http://en.wikipedia.org/wiki/Morphogen