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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)
 
 
 
 
 

Ultrabithorax gene expression in Drosophila imaginal discs and larval nervous system.

Using a monoclonal antibody and image-processing procedures, the patterns of expression of the Ultrabithorax ( Ubx) gene product have been characterized in Drosophila larvae. As reported previously, the metathoracic imaginal discs stain most intensely with anti-Ubx, with some mesothoracic and no prothoracic expression detectable. In the metathoracic discs, the greatest modulation in anti-Ubx staining is along the proximodistal axis. Ubx is generally expressed at higher levels in the posterior regions of metathoracic discs, although relatively high anterior expression is found in some areas. Expression in the mature wing disc is confined to the squamous peripodial membrane cells; in younger wings, Ubx expression fills the posterior half of the peripodial side of the disc. The mesothoracic leg stains with a pattern that is qualitatively similar (but not identical) to that of the metathoracic leg; Ubx is expressed in some anterior regions of the mesothoracic leg, in parasegment 4. Double staining with anti-Ubx and anti-engrailed reveals that discontinuities in Ubx expression that have been suggested to correspond to compartment borders do not coincide with the compartment boundaries in some cases. In the larval ventral ganglion, Ubx expression is greatest in parasegments 5 and 6, as in the embryonic nervous system.[1]

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