Table 3.

DNA damaging effects of 2,4-D in Allium cepa root tips

concentrations (mg/L)	Mean tail intensity ± SE	Mean tail moment ± SE
24 h
Control	57.97 ± 8.66	113.47 ± 19.53
0.67	67.42 ± 5.52	87.52 ± 10.09
1.34	56.10 ± 4.66	120.01 ± 20.53
2.01	51.86 ± 4.73	110.89 ± 20.27
2.68	39.30 ± 4.60	86.89 ± 16.87
3.35	63.23 ± 7.37	107.50 ± 21.87
4.02	45.05 ± 5.56	75.94 ± 12.75
48 h
Control	42.00 ± 5.01	62.65 ± 12.30
0.67	45.03 ± 4.20	54.06 ± 6.32
1.34	52.74 ± 7.65	89.65 ± 17.32
2.01	44.10 ± 7.13	74.05 ± 15.66
2.68	51.09 ± 5.40	70.53 ± 9.61
3.35	56.74 ± 5.12	74.49 ± 8.07
4.02	Not enough cell	Not enough cell