Table 2.

Selected families of transcription factors detected in the mid-foregut.

		Average Signal					Average Signal
Gene	Affymetrix I	16–20s	21–25s	26–30s	Gene	Affymetrix	16–20s	21–25s	26–30s
Fox family					Gata family
Foxa1	1418496_at	2093	2252	2844	Gata1	1449232_at	164	106	175
Foxa2	1422833_at	635	497	712	Gata2	1450333_a_	477	577	510
Foxc1	1419486_at	411	565	503	Gata4	1418863_at	288	323	330
Foxd1	1418876_at	355	471	460	Gata5	1450125_at	149	147	172
Foxf2	1418220_at	56	109	113 t	Gata5	1450126_at	452	444	448
Foxg1	1418357_at	193	331	394	Gata6	1425463_at	101	99	89
Foxj2	1420374_at	166	130	174	Gata6	1425464_at	548	580	498
Foxk2	1428354_at	374	857	527
Foxm1	1448833_at	374	639	473 t	Hox family
Foxm1	1417748_x_	231	235	253	Hoxa1	1420565_at	4171	2838	2510 a
Foxo1	1416983_s_	349	561	540	Hoxa2	1419602_at	188	256	224
Foxp1	1421141_a_	98	81	139	Hoxa3	1427433_s_	100	175	149
Foxp1	1421142_s_	218	183	301	Hoxa4	1427354_at	42	80	172 a,t
Foxp1	1421140_a_	120	205	131	Hoxa4	1420227_at	90	85	125
Foxp1	1435222_at	522	556	1545 a,t	Hoxa5	1448926_at	103	149	259 t
Foxp1	1435221_at	1733	2116	2561 a,t	Hoxb1	1453501_at	539	809	493
Foxp3	1455805_x_	341	340	363	Hoxb2	1449397_at	799	928	801
					Hoxb4	1460379_at	395	408	364
Tbx family					Hoxb5	1418415_at	421	512	517
Tbx1	1425779_a_	391	373	251	Hoxb7/b8	1452493_s_	81	120	186 a
Tbx2	1422545_at	177	232	278	Hoxc4	1422870_at	351	620	608
Tbx3	1448029_at	491	564	503
Tbx6	1449868_at	84	100	76
Tbx20	1425158_at	96	101	83

t= Student’s t-test p ≤ 0.05

a= ANOVA p ≤ 0.05

The table includes the average signal for genes detected in the mid-foregut and lung regions (detection p ≤ 0.05) at 16–20s, 21–25s and 26–30s developmental stages. Only genes with a signal ≥ 100 at any stage are listed. Most genes do not change the level of expression as the lung buds. A few of them change the level of expression significantly indicated by Student’s t and/or ANOVA tests.