Table 1.

Genes specifically expressed in the airway epithelium.

	Gene-ID	Gene-symbol	Gene-name	Ø log2 ratio	covariance
1	CG6186	Tsf1	Transferrin1	4.1	0.05
2	CG18105	ETH	Ecdysis triggering hormone	3.61	0.06
3	CG2520	Lap	like-AP180	3.32	0.08
4	CG10279	Rm62	Rm62	2.99	0.27
5	CG2139	aralar1	aralar1	2.37	0.03
6	CG9020	Aats-arg	Arginyl-tRNA synthetase	2.32	0.18
7	CG1780	Idgf4	Imaginal disc growth factor 4	2.28	0.09
8	CG7539	Edg91	Ecdysone-dependent gene 91	2.26	0.23
9	CG3284	RpII15	RNA polymerase II 15 kD subunit	2.21	0.19
10	CG18076	shot	short stop	2.16	0.27
11	CG14887	Dhfr	Dihydrofolate reductase	2.1	0.35
12	CG9334	Spn3	Serine protease inhibitor 3	2.1	0.13
13	CG1743	Gs2	Glutamine synthetase 2	2.09	0.24
14	CG8409	Su(var)205	Suppressor of variegation 205	2.06	0.26
15	CG13098	mRpL51	mitochondrial ribosomal protein L51	1.98	0.24
16	CG6302	l(3)01239	lethal (3) 01239	1.96	0.06
17	CG13628	Rpb10	Rpb10	1.9	0.09
18	CG10944	RpS6	Ribosomal protein S6	1.89	0.28
19	CG3054	l(2)k05819	lethal (2) k05819	1.81	0.25
20	CG4337	mtSSB	mitochondrial single stranded DNA-binding protein	1.8	0.11
21	CG5258	NHP2	NHP2	1.8	0.06
22	CG30498	boca	boca	1.78	0.07
23	CG4665	Dhpr	Dihydropteridine reductase	1.78	0.29
24	CG11797	Obp56a	Odorant-binding protein 56a	1.75	0.17
25	CG16792	DebB	Developmental embryonic B	1.73	0.12
26	CG3949	hoip	hoi-polloi	1.72	0.19
27	CG4457	Srp19	Signal recognition particle protein 19	1.72	0.2
28	CG5170	Dp1	Dodeca-satellite-binding protein 1	1.66	0.07
29	CG4464	RpS19a	Ribosomal protein S19a	1.64	0.07
30	CG11921	fd96Ca	forkhead domain 96Ca	1.63	0.24
31	CG9670	Fal	falten	1.63	0.15
32	CG10679	Nedd8	Nedd8	1.62	0.21
33	CG8604	Amph	Amphiphysin	1.61	0.06
34	CG10624	sinu	sinuous	1.6	0.17
35	CG11271	RpS12	Ribosomal protein S12	1.59	0.45
36	CG10603	mRpL13	mitochondrial ribosomal protein L13	1.57	0.38
37	CG12665	Obp8a	Odorant-binding protein 8a	1.57	0.46
38	CG4584	dUTPase	Deoxyuridine triphosphatase	1.57	0.29
39	CG10596	Msr-110	Msr-110	1.55	0.12
40	CG11979	Rpb5	Rpb5	1.53	0.39
41	CG11482	Mlh1	Mlh1	1.52	0.1
42	CG3379	His4r	Histone H4 replacement	1.51	0.12
43	CG16869	Ance-2	Ance-2	1.5	0.23
44	CG4494	smt3	smt3	1.45	0.17
45	CG3035	Cm	carmine	1.44	0.07
46	CG7977	RpL23A	Ribosomal protein L23A	1.44	0.47
47	CG3751	RpS24	Ribosomal protein S24	1.43	0.15
48	CG3595	sqh	spaghetti squash	1.42	0.11
49	CG3450	l(2)k03203	lethal (2) k03203	1.41	0.32
50	CG32854	mRpS21	mitochondrial ribosomal protein S21	1.4	0.41

List of genes with a significantly higher level of expression in the tracheal tissue compared with larval tissues minus trachea. The 50 annotated genes with highest specificity for tracheal expression are listed.