Figure 1From: Proof of concept pilot study: prevalence of grass virus infection and the potential for effects on the allergenic potency of pollenCSV prevalence in cocksfoot at the Yellow Ants Reserve, Wytham Wood, Oxford. Infection was deemed by readings greater than two times higher than negative controls in ELISA (2001-2004), and by positive RT-PCR amplification of the CSV Nib cistron (2004-2008). The infection rate is presented as a percentage, and actual numbers (positive/total) are shown for each year.Back to article page