Figure 5.

Change of potency and overall immunoglobulin E (IgE) reactivity of the extracts over 1 year of storage. IgE reactivity of the extracts reconstituted in normal saline and phenol saline in 50% glycerol and kept at room temperature or 4°C was compared with the initial states by inhibition enzyme-linked immunosorbent assay. Ragweed at room temperature (A), ragweed at 4°C (B), mugwort at room temperature (C), mugwort at 4°C (D), Japanese hop at room temperature (E), Japanese hop at 4°C (F), sawtooth oak at room temperature (G), and sawtooth oak at 4°C (H). NS, normal saline.