[Antigen presenting cells during periodontal disease]. / Les cellules présentant l'antigène aux cours des maladies parodontales.

The macrophages have an important function in the presentation of the antigen to the T lymphocytes. This presentation mandatory for the activation of the T lymphocytes is described. The Langerhans cells also play a role in the antigen presentation. These cells especially in the oral mucosa have been studied during the last years.