“…To delineate the genetic basis for the differences between HRSV and BRSV, we and others have undertaken cDNA cloning and nucleotide sequencing of BRSV genes for comparison with the sequences of the genes of HRSV. Recently, nucleotide sequences of the glycoprotein (G), fusion (F), nucleocapsid (N), matrix (M), small hydrophobic (SH) and M2 proteins of BRSV have been reported (Lerch et al, 1990;Walravens et al, 1990;Zamora & Samal, 1992a). There is 30%, 80%, 93%, 89%, 38% and…”