Enamel matrix protein is secreted by Hertwig's epithelial root sheath and is responsible for initiating the original formation of acellular cementum on the developing tooth root.
釉质基质蛋白由Hert wigs上皮根鞘分泌，能诱导发育牙根上的非细胞牙骨质的初期成形。
2
Epithelial root sheath was positively stained.
上皮根鞘细胞染色阳性。
3
The epithelium making contact with the supporting filter resembled Hertwig's epithelial root sheath.