On the 18th day of embryo, there were PAS positive colloids in the follicle lumens and the mature thyroid follicles were formed.
滤泡腔内出现PAS反应阳性胶体,成熟的甲状腺滤泡结构基本形成。
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METHOD Radioimmunoassay was employed to observe changes in thyroid hormone of rabbits with fracture and optical microscope was used to observe the thyroid and analyse the thyroidfollicle.
The height of epithelium, the diameter of follicle, the contents of glue and the morphology of ultra-structure of thyroid in Zn-supplementation groups were similar to that in control group.