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1·At the 38th day of incubation, dorsal gland vesicles with stratified epithelium were evident.

第38天，背腺腺泡明显，腺上皮为复层上皮；

2·Histologically, dentigerous cysts are lined by stratified squamous nonkeratinizing epithelium.

组织学上含齿囊肿为多层鳞状未角化上皮细胞所覆盖。

3·Stratified squamous epithelium with beginning surface cornification.

角化的复层扁平上皮。

4·The result show: the oesophagus has a thick stratified squamous epithelium which is little keratinized with numerous mucous glands.

结果表明，大鸨食管复层扁平上皮角化不明显，粘液腺十分丰富。

5·The sweat glands-like structure expressed both CEA and CK18, the stratum basale of keratinized stratified squamous epithelium wase CK19 and CK10 positive.

免疫组化的结果表明汗腺样结构分别呈CEA和CK 18阳性，而角化复层扁平上皮的基底层细胞分别呈CK19和CK 10阳性。

6·Result: at 8-week embryo, trachea consists of 2-3 layers of stratified columnar cells and mesenchyme around the cells, the reaction of PAS of epithelium was positive.

结果：8周的胚胎，气管壁由2 3层复层柱状上皮细胞及外周的间充质构成，上皮细胞的PAS反应为阳性。

7·Thickly cornified stratified squamous epithelium. the cells in the bright red layer and in the pale layers above it are completely flattened and dead, and have lost their nuclei.

掌皮(厚的角化复层扁平上皮)。亮红色细胞层(透明层)和骑上的染色很淡的细胞层中，细胞都极为扁平化，核消失，细胞死亡。

8·The gland epithelium was irregular pseudo-stratified ciliated columnar epithelium which consist a lot of secretory cells, fewer ciliated columnar cells, and basilar cells.

腺泡上皮为不太规则的假复层纤毛柱状上皮，由大量分泌细胞和少量的柱状纤毛细胞、基细胞共同构成；