Immunohistochemical Evaluation of Angiogenesis and Tryptase-positive Mast Cell Infiltration in Periapical Lesions

These results suggest differential expression of CD105 within RC and PG. There is no difference in angiogenesis and MC density between RC and PG. Moreover, because of the association between MCs with vessels and fibrous stroma, other possible roles of tryptase, in addition to the angiogenic properties, should also be considered.