Fig. 9. (A) Follicle number per slide at the junction of the hypohyal bones (N=3 animals per treatment) in T3 and control sea bream after 7 (64 d.p.h.), 18 (75 d.p.h.) and 31 (89 d.p.h.) days of treatment. (B) Thyrocyte cell height was measured in order to determine thyroid activity. ^aStatistical significant differences between the T3 treated and the control group. (C) Thyroid follicles in control and T3-treated animals at each sampling point. Scale bar, 100 µm. Black asterisks denote a thyroid follicle.