Table 3.

Percentages of Inhibition on Rat Embryo Fibroblasts (REF) Cell Line by Prodigiosin during Three Periods of Exposure

Conc.	I.R.± SD
L.S.D	2.67*	3.02*	2.17*
(µg/ml)	24 hrs	48 hrs	72 hrs
15.62	1.9 ± 0.06	3.5 ±0.13	3.9± 0.16
31.25	4.1 ± 0.21	5.7± 0.24	6.3± 0.23
62.5	6.8 ± 0.31	6.1± 0.27	7.9± 0.37
125	11.6 ± 0.52	9.6± 0.64	10.2± 0.57
250	13.5 ± 0.71	14.3±0.69	14± 0.63

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