Fig. 5
From: Multilevel responses of adult zebrafish to crude and chemically dispersed oil exposure
Acetylcholinesterase (AChE) activity in adult female zebrafish brain after 3 and 21 d of exposure to WAF dilutions of crude oil (5% and 25% WAFOIL) and chemically dispersed crude oil (5% WAFOIL+D). Data representation as in Fig. 3. Letters indicate statistically significance between treatments within the same sampling point and asterisk indicates statistically significance between sampling timepoints (p < 0.05)