English: Wingless and Hedgehog reciprocal signaling during segmentation of Drosophila embryos. Source: I made this diagram with ClarisDraw and PhotoShop.
{{BotMoveToCommons|en.wikipedia|year={{subst:CURRENTYEAR}}|month={{subst:CURRENTMONTHNAME}}|day={{subst:CURRENTDAY}}}} {{Information |Description={{en|Wingless and Hedgehog reciprocal signaling during segmentation of ''Drosophila'' embryos. Source: I ma