IGHE and nasal cavity polyp: The combination of S. baicalensis and E. senticosus, however, had a more potent effect on the release of PGD2 in inferior turbinate tissue (significance reached for 2 μg/mL for each component) and nasal polyps (1 μg/mL); a concentration of 0.2 μg/mL totally suppressed the release of PGD2 from nasal polyp tissue after anti-IgE stimulation (Figure 1(a)).