Free Access
Figure 4.

Mean group log10 PCV2 DNA levels over time (± SE). Arrows indicate the timing of PCV2 inoculation in groups PCV2a, R-PCV2a and R-PCV2a/b and reinoculation in groups R-PCV2a and R-PCV2a/b. A sample with no threshold cycle (C T) reading during the 40 amplification cycles was considered to be negative.