RT-PCR analysis of viral RNA to verify presence of inserted sequences. A 51 bp segment of the STOML2 gene was inserted in the M segment of A/Puerto Rico/8/1984 (H1N1) ("PR8"). Viral RNA was extracted
RT-PCR analysis of viral RNA to verify presence of inserted sequences. A 51 bp segment of the STOML2 gene was inserted in the M segment of A/Puerto Rico/8/1984 (H1N1) ("PR8"). Viral RNA was extracted