Estrogenic Evaluation and Organochlorine Identification in Blubber of North Sea Harbour Porpoise (Phocoena phocoena) Stranded on the North Sea Coast

Figure 1

Dose-response curve of increasing concentrations of E2 (ng/mL culture medium). Data represent the mean ± S.D (). The maximal response observed for E2 was arbitrarily set to 100%. The dotted line represents the minimal relative response to consider an estrogenic activity (17.6% of response) and the dashed line represents EC₅₀.