Table 3.

Quantification of CPE release into the cell culture medium of empty vector or optCPE-transfected human colon carcinoma cells (error values are S.D.)

Cell line	Vector	CPE ± SD [ng ml -1 ]
Sk-Mel5	e.v.	0
	optCPE	46.92 ± 22.06
HCT116	e.v.	0
	optCPE	231.67 ± 46.21
SW620	e.v.	0
	optCPE	67.30 ± 1.33
SW480	e.v.	0
	optCPE	80.51 ± 5.97
CaCo-2	e.v.	0
	optCPE	16.50 ± 3.15
HT-29	e.v.	0
	optCPE	5.40 ± 0.9