Maller R, Sörén L
Acta Pathol Microbiol Scand C. 1978 Apr;86(2):89-91.
When lymphocytes from humans with serological immunity against rubella were incubated with live rubella virus, supernatants were obtained which when added to non-infected lymphocytes gave a significant inhibition of phytohaemagglutinin (PHA)-induced proliferation. In contrast, supernatants from virus-infected lymphocytes from donors lacking immunity against rubella gave no inhibition of the PHA response.