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The mast cells in cheek and esophagus of 50 human fetuses were studied with histochemical techniques.
用组织化学技术，对50例不同胎龄胎儿颊部和食管肥大细胞进行了研究。
youdao
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The mast cells in cheek and esophagus of 50 human fetuses were studied with histochemical techniques.
用组织化学技术，对50例不同胎龄胎儿颊部和食管肥大细胞进行了研究。
youdao