Influenza B virus mRNA synthesis in vivo: efficient transcription of vRNAs 1, 2 and 3 -- Varich et al. 71 (9): 2171 -- Journal of General Virology

Influenza B virus genomic RNA (vRNA) segments encoding polymerase proteins were shown to be efficiently transcribed in vivo, unlike those of influenza A virus. The results are discussed in connection with the primary structure of the 3' ends of vRNA segments.