Determining the Threshold Concentration of Birch Pollen for Inducing Allergic Symptoms Using an Allergen Challenge Chamber.

Int Arch Allergy Immunol · 2026 · PMC12193739 · PMID 40328230

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a positive trendno p-value reported

Descriptively, a positive trend in the concentration-response relationship was observed when regarding the proportion of participants with a mean TNSS ≥0.55 of each verum challenge ( Fig. 4 ).

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