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。
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。
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