Table 1. Detection of CTCs in lung cancer patients using oHSV1-hTERT-GFP.

Type	TNM or stage	Number of patients with > 3 CTCs	Total number of patients	Sensitivity*
Adenocarcinoma	T1N0M0	3	4	0.75
	N0M0	12	20	0.6
	N + M0	37	48	0.813
	M1	15	15	1
Squamous cell carcinoma	N0 M0	2	4	0.5
	N + M0	6	7	0.857
	M1	5	5	1
Small cell lung cancer	LS	1	4	0.25
	ES	8	10	0.8

Note:

^*Sensitivity = Number of patients with > 3 CTCs/Total number of patients. ES, Extensive stage; LS, Limited stage.