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The larval salivary gland of Drosophila melanogaster synthesizes and secretes glue glycoproteins that cement developing animals to a solid surface during metamorphosis. The steroid hormone 20-hydroxyecdysone (20E) is an essential signaling molecule that modulates most of the physiological functions of the larval gland. At the end of larval development, it(More)
The DNA damage checkpoint protein kinase mutated in ataxia telangiectasia (ATM) is involved in sensing and transducing DNA damage signals by phosphorylating and activating downstream target proteins that are implicated in the regulation of cell cycle progression and DNA repair. Atm-/- cells are defective in cellular proliferation mediated by the Arf/p53/p21(More)
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