[What do we know about the infection-preventing properties of the pharyngeal lymphatic ring?].
D000234:Adenoids / Q000502:physiology*; D006801:Humans; D008221:Lymphoid Tissue / Q000502:physiology*; D014066:Palatine Tonsil / Q000502:physiology*
Was wissen wir über die Infektionsabwehr des lymphatischen Rachenringes?