Table 5.

Results of Immunobead RT-PCR screening of peripheral blood samples from the 16 patients with head and neck cancers included in this study for marker expression.

	Marker 1				Marker 2
	ESX	ESX	ESX	ESX	EGFR	EGFR	EGFR	EGFR
P#	BF 1	BF 2	AF 1	AF 2	BF 1	BF 2	AF 1	AF 2
1				POS
2
3	POS
4	POS					POS	POS
5	POS
6	POS	POS		POS			POS	POS
7	POS	POS	POS	POS			POS	POS
8	POS	POS		POS	POS	POS	POS
9						POS	POS	POS
10								POS
11	POS	POS			POS		POS	POS
12	POS
13			POS	POS	POS	POS
14
15	POS				POS		POS
16							POS
	Marker 3				Marker 4
	EphB4	EphB4	EphB4	EphB4	CK19	CK19	CK19	CK19
P#	BF 1	BF 2	AF 1	AF 2	BF 1	BF 2	AF 1	AF 2
1						POS	POS
2	POS				POS	POS
3			POS		POS	POS	POS
4				POS		POS
5					POS	POS		POS
6	POS	POS		POS	POS	POS	POS	POS
7		POS	POS	POS	POS	POS	POS
8	POS	POS		POS	POS	POS	POS	POS
9	POS	POS			POS	POS	POS	POS
10			POS					POS
11	POS						POS	POS
12								POS
13	POS	POS		POS	POS	POS	POS
14
15		POS	POS			POS	POS
16					POS	POS		POS

P# denotes patient number. Duplicate samples taken before surgery (BF) or after surgery (AF) were screened for expression of the four markers ESX, EGFR, EphB4 and CK19. Samples that were positive for individual markers are indicated (POS).