Histological and immunohistochemical study of thyroid gland in Caucasian squirrel (Sciurus anamalus) (Gmelin, 1778) by using marker (Anti-Thyroglobulin, Code IR5090)

The current study is designed to investigate the histological and immunohistochemical characteristics of thyroid gland in adult male Sciurus anamalus. This found that Caucasian squirrel located neck area, below larynx, on both sides trachea. It has two lobes (right left) with cylindrical shape. studies revealed surrounded by a capsule which consists connective tissue forming layers are outer layer inner layer, adipose appears overlapping layer. follicles different shapes sizes, lined simple cuboidal epithelial (follicular cells). Sometimes it form high or low tissue, dependent functional activity state gland, cavities filled colloid. In addition, there kinds cells spread follicular parafollicular cells, they fewer number larger size than appear either singly clusters occupy sites between within follicle. Immunologically, results observed an immune response thyroglobulin antibodies detect protein secreted turn Moreover, appeared clear cell membrane colloid through appearance brown color specific reaction.