Effect of TET exposure on zebrafish growth and liver microstructure. (a) Average daily weight gain; (b) Average body length; and (c) Representative microscopic images of H&E stained liver sections (at the scale of 10 µm), showing nuclear chromatin condensation (red arrow) and vacuoles (red asterisks) of juvenile zebrafish exposed to TET at 0 (control), 1, and 100 µg/L. Data presented as the mean ± SEM of four replicates and an asterisk indicates the statistical significance (p-value <0.05) between TET treated and control groups. (For interpretation of the references to colour in this figure legend, the reader is referred to the web version of this article.)