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A Photomicrograph of a section in thyroid gland of a control rat (group I). It is showing multiple follicles filled with homogenous acidophilic colloid (Co). The follicles are lined with flattened to cuboidal follicular cells with oval (▲) to rounded (↑) pale nuclei. The interfollicular cells (∆) and a part of a blood capillary (bc) can also be seen inbetween the follicles. H&E stain Mic.Mag. X 400
