Figure 5 in The anatomy of the thyroid gland among "fishes": phylogenetic implications for the Vertebrata

Figure 5. - Section in the branchial region of a longsnout seahorse, Hippocampus reidi (Syngnathidae). The thyroid is diffuse, pattern 2. c = colloid; m = muscles; th.i = thyroidian islet; v = vein. Histological preparation by Dr D. Adriens. Scale bar = 100 µm. Figure 6. - Sagittal section of the buccal region of a cobia, Rachycentron canadum (Rachycentridae). The thyroid is composed of gathered lobes, pattern 4. b.c = buccal cavity; cart = cartilage; m = muscles; th.f = thyroidian follicle; th.l = thyroidian lobe; v.ao = ventral aorta. Histological preparation by Dr T. Passos de Andrade. Scale bar = 1 mm.