Fig. 1. A). Photomicrograph of head width of zebrafish larvae at 9 dpf in all groups with a 40× objective magnificent. Measurements are taken on the head from the tip of the right eye to the left. B). The size of the head width of zebrafish larvae after exposure to hypoxia to different concentrations of AA. Acetic acid at various concentrations increased the growth of AA administration at concentrations of 0.36, 0.72, and 1.45 μg/ml. It increased the head width of zebrafish larvae exposed to hypoxia compared to the control. The data are presented as the mean ± SEM. *p < 0.05, **p < 0.01, ***p < 0.001, and ****p < 0.0001 were considered significant, highly significant and extremely significant differences, respectively. The concentration of 1.45 µg/ml AA significantly increased the head width of zebrafish larvae at 9 dpf compared with normal.
