Table 2.

CTCs expressing epithelial markers and the grafting efficiency.

		PDX		Total	p Value a
		No (−)	Yes (+)
KRT18	Neg	21	19	37	p = 0.009
	Pos	0	7	7
Total		21	26	47
KRT19	Neg	16	19	34	p = 1.000
	Pos	5	7	12
Total		21	26	47
KRT8	Neg	17	22	39	p = 1.000
	Pos	4	4	8
Total		21	26	47
Epithelial markers	Neg	14	14	28	p = 0.377
	Pos	7	12	19
Total		21	26	47

^a Fisher’s exact test.