[Demonstration of PGE2 by immunofluorescence in the wall of radicular cysts].

The present study gives the first evidence, through immunofluorescence, of the prostaglandins PGE2 in radicular cysts. The results are in agreement with literature. In addition, the immunofluorescence technique has also demonstrated the localization of prostaglandins inside the cyst cavity. In opposition to previous data, the present study also shows that epithelial cells seem to synthesize more PGE2 than fibroblasts and mononuclear components of the external connective tissue.