Video 4. Ihog overexpressing cytonemes emerging from the A compartment cells accumulate endogenous Hh produced by the P compartment cells.

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DOI: 10.7554/eLife.24045.010

Z-stack, from apical to basal, of a ptc.Gal4, tub.Gal80^ts>UAS.ihogRFP wing disc after 24 hr at restrictive temperature, stained with α-Hh antibody. Note the increase of Hh levels at the basal A compartment cytonemes.

DOI: http://dx.doi.org/10.7554/eLife.24045.010