エナメル上皮腫の腫瘍細胞とその初代培養細胞の電顕学的研究

抄録

Ameloblastoma in the maxilla is relatively rare even though this tumor is most frequently seen among odontogenic tumors.
We had a chance to treat a case of ameloblastoma (follicular type) in the maxilla which seemed to be clinically at first a malignant tumor and took primary culture cells from the tumor tissue.
Ultrastructural observation of the cells in vivo and in vitro were performed.
In the cells in vitro, nucleus was round and nucleolonema in the nucleoli were recognized. In the cytoplasm, many lysosomes were found and the number of rough endoplasmic reticulum was not so large as in vivo.The cells in vitro resembled columnar epithelial cells in vivo.As compared with the active cells in vivo, the cells in vitro had few organella.