Fig. 3From: Comparative efficacy of experimental inactivated and live-attenuated chimeric porcine circovirus (PCV) 1-2b vaccines derived from PCV1 and PCV2b isolates originated in ChinaComparison of the PCV2 DNA loads in sera of the differently treated pigs challenged with PCV2. The PCV2 genomic copy load was presented as a log10 value of PCV2 genomic copy load per 1 ml of sera. Different letters (A, B) indicate significant differences among different groups at 7, 14, or 21 DPC (P < 0.05)Back to article page