The microorganisms most commonly used as probiotics are lactic acid bacteria, especially those of the genus Lactobacillus. In the present study, Lactobacillus acidophilus were isolated from two different pooled samples homemade curd and commercial curd, were characterized for their antiproliferative activity. | Cytotoxicity effects of Lactobacillus acidophilus on Hep G2 cell line and its effects on gene regulation with bax and Bcl2