Table 1.

Fitted IC₅₀ Values for Each Cell Line Treated with 5-FU^a

cell line	HER2 status29	culture format	IC50 (μM)
SK-BR-3	+++	adherent	1.1 ± 1.5
BT-474	+++	adherent	340 ± 150
BT-474	+++	spheroid	370 ± 150
BT-474 clone 5	+++	adherent	95 ± 20
BT474 clone 5	+++	spheroid	160 ± 40
MDA-MB-231	-	adherent	98 ± 15
MDA-MB-468	-	adherent	4.3 ± 1.9

^aError represents the standard error of fitting.