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Termination of pupal diapause in H. zea in response to DH and four agonists, whose structures are shown. ED50s are expressed in picomoles per pupa, and each compound was evaluated in a range of doses from 0 to 1,000 pmol per pupa. Error bars indicate SDs from three replicates. A total of 14–20 pupae were tested in each replicate. *Data from Zhang et al. (9). **Data from Zhang et al. (10).
