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Table 2 Allergen concentrations at screening and corresponding cumulative concentration received during NAC

From: The Allergic Rhinitis Clinical Investigator Collaborative (AR-CIC): verification of nasal allergen challenge procedures in a study utilizing an investigational immunotherapy for cat allergy

Screening challenge dilution Actual (cumulative) dose delivered at NAC Visit
1:128 1:128
1:32 1:24
1:8 1:6
1:2 1:2