Figure 1From: Ragweed (Ambrosia artemisiifolia) pollen allergenicity: SuperSAGE transcriptomic analysis upon elevated CO2 and drought stressAmount of PBS-soluble (a) and methanolic-extractable (b) phenolic metabolites in ragweed pollen. The separation was performed by RP-HPLC. The bars (N = 5) indicate SD and significant differences are indicated by an asterisk.Back to article page