Summers L
J Oral Pathol. 1975 Dec;4(6):324-9. doi: 10.1111/j.1600-0714.1975.tb01749.x.
Small sections of granulomas containing proliferating epithelium were incubated with a radio-opaque marker (Thorotrast) and tissue culture medium. Electron microscopic examination demonstrated that some epithelial cells had the potential to take up the marker whereas in control sections of apical cysts this did not occur. The implications of these results are discussed.
将含有增殖上皮的肉芽肿小切片与不透射线标记物（钍胶体）和组织培养基一起孵育。电子显微镜检查表明，一些上皮细胞有摄取该标记物的潜力，而在根尖囊肿的对照切片中则未出现这种情况。讨论了这些结果的意义。
