Table 3.
OR mRNAs tested by ISH
| Gene Symbol | Class | OSNs/mm (wild-type) | ISH ratio | GeneChip ratio | Region |
| Olfr2 | Class II | 2.6 | 0.03 | 0.4* | Ventral |
| Olfr6 | Class II | 0.8 | 0.02 | 0.2* | Ventral |
| Olfr15 | Class II | 3.5 | 5.70 | 3.1* | Ventral |
| Olfr17 | Class II | 0.9 | 0.10 | NP | Ventral |
| Olfr90 | Class II | 1.0 | 2.10 | 1.5* | Ventral |
| Olfr129; Olfr121 | Class II | 2.0 | 2.10 | 2.9* | Ventral |
| Olfr156 | Class II | 3.1 | 0.02 | 0.4 | OR37 region |
| Olfr160; Olfr151 | Class II | 1.6 | 0.40 | 0.3 | Dorsal |
| Olfr270 | Class II | 0.7 | 0.07 | 0.3* | OR37 region |
| Olfr272 | Class II | 0.1 | 0.00 | 0.5* | OR37 region |
| Olfr273 | Class II | 0.5 | 0.00 | 0.2* | OR37 region |
| Olfr308 | Class II | 0.6 | 0.00 | 0.6* | Ventral |
| Olfr545; Olfr544 | Class I | 2.6 | 0.03 | 0.4* | Dorsal |
| Olfr615 | Class I | 1.0 | 0.00 | 0.2* | Dorsal |
| Olfr642 | Class I | 0.5 | 0.00 | 1.0 | Dorsal |
| Olfr1440 | Class II | 1.2 | 1.80 | 1.7* | Ventral |
| Olfr1508; Olfr1507 | Class II | 1.9 | 0.05 | 0.5* | Ventral |
OSNs/mm, the number of OSNs expressing the OR per mm of olfactory epithelium in Emx2+/+ mice. Ratios are Emx2−/− divided by Emx2+/+. *, Significant difference between Emx2−/− and Emx2+/+ mice; NP, not present on the microarray; region, the zone of expression within the olfactory epithelium.