Article
The hedgehog morphogen and gradients of cell affinity in the abdomen of Drosophila.
Development (Cambridge, England) - 1 Jun 1999
Lawrence P A, Casal J, Struhl G
Abstract excerpt
The adult abdomen of Drosophila is a chain of anterior (A) and posterior (P) compartments. The engrailed gene is active in all P compartments and selects the P state. Hedgehog enters each A compartment across both its anterior and posterior edges; within A its concentration confers positional information. The A compartments are subdivided into an anterior and a posterior domain that each make different cell types...
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