Effect of the various CPD forms on Drosophila survival. A. Percentage of the Drosophila embryo surviving to the adult stage, normalized to wild type. B. Percentage of Drosophila pupa surviving to the adult stage, normalized to wild type. The error bars show standard error of the mean (n=3). *, p<0.05, relative to wild type pupa survival, using Student’s t-test.