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Transient effects of altered photoperiod.After entrainment and initial measurements in L:D 12:12, the photoperiod was shortened to 6 h by switching the lights off at subjective noon. After 3 days under L:D 6:18, the cells were moved into constant light. Measured data (points) are compared with the model (lines) for transcriptional and translations reporters for CCA1 and TOC1. The data were re-scaled as described in Experimental procedures.
