Rubella virus antigen in lymphocytes of patients with angioimmunoblastic lymphadenopathy (AIL)

Lymph node sections from 14 patients with angioimmunoblastic lymphadenopathy (AIL) were incubated with fluorescein-labeled specific antiserum against rubella virus antigen. In lymphoid cells from 11 patients intracytoplasmic rubella antigen was demonstrated. The results support the idea of a persistent virus infection in AIL.