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CT values of 8 hemagglutination (HA) unit serial dilutions for 4 erythrocyte species of human pandemic H1N1 and seasonal H1N1*, obtained using real-time reverse transcription (RT)-PCR assays
*Data in left panel (FluA CT) express the mean CT value using primer for the M gene of influenza A virus and †data in the right panel (H1N1 CT) show the CT value using primers for the H1 gene of the influenza virus.
Abbreviation: CT, cycle threshold.
