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1·Arteriovenousanastomoses were observed in the inferior and middle turbinal mucosae of fetuses.

在胎儿的下和中鼻甲粘膜中观察到动静脉吻合。

2·The muscularis mucosae derived from the muscle stem cells in the submucosa.

黏膜肌层起源于黏膜下层的肌肉干细胞。