SummaryA standardized in‐house reference extract from the pollenof Parthenium hysterophoms, which is responsible for the high incidence of allergic rhinitis in India, was generated and examined by skin test, radio‐allergosorbent test inhibition and isoelectric focusing.Partheniumreference allergen discs and positive reference serum were also generated. These reference reagents could not only be used for the quantitation ofPanhenium‐specific IgE in the sera of rhinitis patients but also for the evaluation of allergenic activity (relative potency and lot‐to‐lot variation) of different batchesof Parthen
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