Figure 4From: Clinical validation of controlled grass pollen challenge in the Environmental Exposure Unit (EEU) Total Nasal Symptom Scores (TNSS) were higher in the higher pollen concentration group (HPC) than the lower pollen concentration group (LPC) after three hours of pollen exposure. Similar to TSS, final TNSSs on Day 2 were similar to those reported on Day 1 after 3 hours of pollen exposure, however, scores increased more quickly on Day 2.Back to article page