Table 1.

Changes in OR expression frequencies in control compared with Cyp26B1 mice

Zone	Class	OR gene	OR⁺ cells		Change	Paired t test
Zone	Class	OR gene	Control	OMP-Cyp26B1	Change	Paired t test
Age PD14
Z1	I	MOR40-14	32.04 ± 1.09	30.27 ± 0.63	—	p > 0.05
Z1	II	MOR161-6 (K21)	31.39 ± 2.22	30.92 ± 5.62	—	p > 0.05
Z1	I	MOR18-2 (MOL2.3)^*	4.61 ± 1.34	13.19 ± 1.47	↑	p < 0.001
Z2	II	MOR263-5 (P2)^*	39.69 ± 9.07	57.33 ± 12.41	↑	p < 0.001
Z2	I	MOR35-1	34.14 ± 4.24	47.72 ± 4.84	↑	p < 0.001
Z2-3	II	MOR256-17	208.13 ± 12.88	124.75 ± 12.17	↓	p < 0.001
Z3	II	MOR256-55 (L45)	73.24 ± 9.16	70.21 ± 5.80	—	p > 0.05
Z4	II	MOR235-1 (A16)	111.26 ± 9.38	50.12 ± 7.24	↓	p < 0.001
Z4	II	MOR244-1 (MOR28)	117.28 ± 5.12	16.27 ± 3.91	↓	p < 0.001
Age E16.5
Z2-3	II	MOR256-17	31.067 ± 1.16	29.39 ± 0.77	—	p > 0.05
Age PD4
Z1	I	MOR40-14	4.29 ± 0.26	4.39 ± 0.92	—	p > 0.05
Z1	II	MOR161-6 (K21)	3.88 ± 0.39	3.57 ± 0.17	—	p > 0.05
Z2	II	MOR263-5 (P2)	7.21 ± 1.12	7.72 ± 0.74	—	p > 0.05
Z2	I	MOR35-1	26.77 ± 8.19	29.67 ± 2.89	—	p > 0.05
Z2-3	II	MOR256-17	86.08 ± 14.51	47.50 ± 11.06	↓	p < 0.001
Z4	II	MOR235-1 (A16)	33.29 ± 1.23	18.38 ± 0.67	↓	p < 0.001
Z4	II	MOR244-1 (MOR28)	53.7 ± 13.74	26.14 ± 8.53	↓	p < 0.001

OR expression frequencies are presented as mean OR⁺ cells ± SD per hemisection (n = 48), Student's t test, two tailed. Similar frequencies in control and Cyp26B1 mice are indicated with —; higher and lower frequencies in Cyp26B1 mice compared with control mice are indicated with ↑ and ↓, respectively.
↵*βgal⁺ cells quantified in heterozygous OR-reporter mice.