Cyclic Expression of Antigen and Infectious Virus in a BHK Cell Line (0-853) Persistently Infected with an SSPE Strain of Measles Virus

Abstract
Establishment and characteristics of a baby hamster kidney cell line (BHK 0-853) persistently infected with a subacute sclerosing panencephalitis strain of measles virus (Lec strain) is described. The persistent infection was easily and repeatedly established and no special conditions were required. There was a predictable fluctuation in expression of virus intracellular and membrane antigens which varied from greater than 90% to less than 1% of the cells, demonstrating these antigens during the first 6 or 7 passages. Thereafter, fluctuation of antigen and infectious virus expression continued in an unpredictable fashion.