Fig. 4
From: The use of oral fluids to monitor key pathogens in porcine respiratory disease complex
PCV2 viral load in OF samples. PCV2 viral load (log10 genome copies/mL) for OF samples collected from pens at between 5 and 21 weeks of age. Each sample from each rope is represented regarding batch, time point and pen from which it was collected. In BLACK viral load values over the limit of detection (1 × 103.48 genome copies per mL). In BLUE, negative samples where PCV2 DNA was not detected. In RED, inconclusive results with viral load values under the limit of detection. Note that viral load values under the limit of quantification (1 × 104 genome copies per mL) could be not accurately quantified