OlfDNCX display altered responses to odorants. A. A photograph of the turbinates in a mouse showing EOG recording sites. Endoturbinates are indicated by roman ordinals. The approximate locations for EOG recordings are indicated. B. Typical EOG responses for octaldehyde (solid line) and benzaldehyde (dotted line) in wild type mice (WT) and in OlfDNCX in Position 1. Duration of the stimulation and the response magnitude are as indicated. C. Dose-response relationships for peak EOG responses to octaldehyde (normalized to responses of 100 μM benzaldehyde) in OlfDNCX (open circle) and their WT littermates (solid circle). Significant differences between the two groups are indicated by asterisks (*, p < 0.05; **, p < 0.01; n = 11).