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。
On the 18th day of embryo, there were PAS positive colloids in the follicle lumens and the mature thyroid follicles were formed.
胶体铁染色阳性也是CRCC的特征之一。
CRCC was also characteristically positive for colloidal iron.
强PAS阳性的胶体见于成年中国水牛腺垂体各部及神经垂体。
The strongly PAS-positive colloid was found in all parts of the adenohypophysis and neurohypophysis in the mature Chinese buffalo.
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