Figure 5
From: Photodynamic therapy in oral lichen planus: A prospective case-controlled pilot study
PDT induces local anti-inflammatory effects in OLP. (a) Overview of immunohistochemical staining of mucosal tissue sections with a lesional T- cell infiltrate before and after PDT treatment (D1, D28). (b–d) Relative number of lesional CD3+, CD4+ and CD8+ cells are decreased 14 days after PDT treatment. (e) Relative number of lesional IL-17+ cells is increased 14 days after PDT treatment. **p < 0.01. PDT, photodynamic treatment.
