Drosophila

embryo, the correct associ-ation of muscles with their specific tendon cells is achieved through reciprocal interactions between these two distinct cell types. Tendon cell differentiation is ini-tiated by activation of the EGF-receptor signaling path-way within these cells by Vein, a neuregulin-like factor secreted by the approaching myotube. Here, we de-scribe the cloning and the molecular and genetic analy-ses of kakapo,