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[mass noun] A steroid hormone that controls moulting in insects and other arthropods.
- ‘Larval molting in Drosophila, as in other insects, is initiated by the coordinated release of the steroid hormone ecdysone, in response to neural signals, at precise stages during development.’
- ‘A pulse of the steroid hormone ecdysone at the onset of metamorphosis triggers the rapid transformation of a flat leg imaginal disc into an immature adult leg, largely through coordinated changes in cell shape.’
- ‘Consequently, both the onset and the termination of disc growth are determined by the joint action of ecdysone and juvenile hormone.’
- ‘This checkpoint may be controlled by signaling through the steroid hormone ecdysone.’
- ‘Two hormones in particular drive these fundamental processes: ecdysone and juvenile hormone.’
1950s: from Greek ekdusis shedding + -one.
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