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Fig. 6
Fig. 6. Day-night variation in the response of zebrafish to Schreckstoff. (A) Schematic diagram of the experiment. To assess freezing in larval fish following exposure to the alarm substance, fish were exposed to vibrations in the day (ZT3) (B) or at night (ZT15) (C). Control fish, which are non-expressing siblings of Tg(gng8:GAL4, UAS:Δclocka) fish, show a reduction in startle after exposure during the day, but not at night. This response to alarm substance was not seen in Tg(gng8:GAL4, UAS:Δclocka) fish in the day or night. Error bars in panels B and C indicate standard deviation.
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