Answers are grounded in this paper and cite their sources.
Balb/c mouse cells were persistently infected with RS virus. Continued passage of the virus produced in these Balb/c cells resulted in a 10-fold increase in the amount of infectious virus produced. Approximately 80% of the BCH4 cells expressed RNP and "spike" antigen intracellularly and associated with the cell surface.
No takes yet. Share an insight, caveat, or question.
Fernie et al. (1981) studied this question.
Synapse has enriched 5 related papers. Consider them for comparative context: