Table 1.

Percentages of Inhibition on MDA-MB-231 (MDA) Epithelial, the Cell Line of Human Breast Cancer by Prodigiosin during Three Periods of Exposure

Conc.		I.R.± SD
L.S.D	6.13*	7.98*	5.89*
(µg/ml)	24 hrs	48 hrs	72 hrs	L.S.D
15.62	45.42 ± 2.42	91.56 ±4.70	36.80± 1.40	8.28*
31.25	43.13 ± 2.16	90.38± 4.52	33.69± 1.46	7.93*
62.5	55.65 ± 2.80	86.52± 3.87	36.22± 1.29	7.96*
125	33.15 ± 1.75	63.39± 2.60	25.98± 1.23	6.80*
250	28.56 ± 1.25	46.59± 2.43	23.12± 1.18	6.29*

I.R., inhibition rate; SD, standard deviation; L.S.D., least significant difference, hrs, hours; P, probability;*: p < 0.05