The proliferative
response of lymphocyte was estimated using the colorimetric
3-(4-5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium
bromide (MTT) according to the procedure given by
Mosmann (1983).SI is a ratio of optical density of stimulated
and unstimulated cells. The data were analyzed using
two way repeated measures ANOVA with two factors i.e.,
different treatment groups and periods. All results were
compared to control animals, as well as to the arsenic
exposed animals, in order to elucidate the possible protective