Table 2. Cell cycle distribution of human colon carcinoma HT-29 cells exposed to different combinations of SN-38 and FU.

	G0–G1	S	G2–M
Control	62.8±0.8	27.0±0.9	10.2±1.0
10 nM SN-38	42.8±1.1	31.5±1.4	25.7±0.9
1 μM FU	45.9±1.4	44.1±1.6	10.0±0.7
10 nM SN-38+1 μM FU	40.9±1.6	46.0±0.7	13.1±1.3
10 nM SN-38 → 1 μM FU	37.2±1.4	60.8±1.9	2.0±0.2
1 μM FU → 10 nM SN-38	34.5±1.1	45.4±2.3	20.1±1.2