Figure 3From: Ragweed (Ambrosia artemisiifolia) pollen allergenicity: SuperSAGE transcriptomic analysis upon elevated CO2 and drought stressDistribution of low- to very high-abundant sequence tags. The tags were found uniquely under control conditions (380Â ppm CO2), under elevated CO2 (700Â ppm CO2), under CO2 plus drought or under drought, or found to be common in all four libraries at one time. The data were analyzed for the different filter criteria indicated in the graph.Back to article page