... probe and < /b> those restriction fragments from MDCK DNA which were observed to hybridize. MDCK Eco RI 7.1 kb FragmentProbeHindIIIXbaIBamHIBamHIBamHIAvrIISpeI EcoRIBamHISacIBamHIBamHIXbaIXbaIBamHISphISpeIEcoRIHindIIIXbaIBamHISacIBamHI ... restrictionsite appropriate for < /b> cloning < /b> between the < /b> Bbs I < /b> sites of< /b> pAD4000. For < /b> influenza < /b> A < /b> strains, the < /b> restriction siteswere BsmBI (PB1, PA, NP, M, and < /b> NS) or AarI (PB2, HA and < /b> NA). For < /b> influenza < /b> B strains, ... production of < /b> influenza < /b> vaccines for < /b> human vaccination is in most cases an egg-base proc-ess, many vaccine manufacturers are actively developingcell-based influenza < /b> vaccine capabilities. Cell-based...