Histochemical studies on the mandibular condyle of the human fetus at gestational ages 12, 14, and 16 weeks were performed.Methods. Histological sections were stained with Schiff’s periodic reaction for glicoproteins, hematoxiline eosine detects mesenchymal tissue and trichhromic stain for collagen. The ANOVA one-way test was used to evaluate the differences during stained zones in the three fetus groups.Results. The percentage of glycoproteins and mesenchymal tissue was denser at 12 weeks. This percentage decreases at 14 weeks and is less at 16 weeks. An increase in the amount of collagen in the studied weeks was observed. The percentages of glycoproteins, mesenchymal tissue, and collagen were significantly different;f= 4373, 9624.8, and 3674,P<0.0001for the three studied groups.Conclusion. The endochondral bone formation of the mandibular condyle includes modifications of the quantities of glycoproteins, mesenchymal tissue, and collagen.
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机译：进行了胎儿12、14和16周胎龄下颌con突的组织化学研究。组织学切片用席夫氏定期反应对糖蛋白进行染色，hemotoxiline eosine检测间充质组织，用三色性染色检测胶原蛋白。使用ANOVA单向检验评估三个胎儿组染色区域之间的差异。糖蛋白和间充质组织的百分比在12周时更密集。该百分比在14周时降低，而在16周时降低。在研究的几周内观察到胶原蛋白量的增加。三个研究组的糖蛋白，间充质组织和胶原蛋白百分比显着不同; f = 4373、9624.8和3674，P <0.0001。下颌con的软骨内骨形成包括糖蛋白，间充质组织和胶原蛋白数量的修饰。
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