Side population cells isolated from KATO III human gastric cancer cell line have cancer stem cell-like characteristics

Table 1 Tumor diameters in side population and non-side population cells sorted from the KATO III cell line in nude mice after 6 wk

Mouse	Cell	Cell dose	Tumor diameter (cm)
A	SP	1 × 104	2.0
		1 × 103	1.0
	NSP	1 × 104	2.0
		1 × 103	0.5
B	SP	1 × 104	2.4
		1 × 103	1.3
	NSP	1 × 104	2.0
		1 × 103	Not tested
C	SP	1 × 104	2.0
		1 × 103	1.1
	NSP	1 × 104	2.0
		1 × 103	0.9
D	SP	1 × 104	2.2
		1 × 103	1.2
	NSP	1 × 104	1.9
		1 × 103	1.0
E	SP	1 × 104	1.8
		1 × 103	1.2
	NSP	1 × 104	1.8
		1 × 103	Not tested
F	SP	1 × 104	2.0
		1 × 103	1.0
	NSP	1 × 104	1.8
		1 × 103	1.0

SP: Side population; NSP: Non-side population.