Fig. 1From: Possibility for detecting 14 typical odorants occurring in drinking water by employing human odor-binding protein OBP2aFluorescence spectra of OBP2a (pink line), 1-NPN (light green line) and OBP2a/1-NPN mixture (2 μmol/L:2 μmol/L) (dark green line)Back to article page