METHODS	Over a total test period of 30 days , 10 individuals ( the symbiotic group ) consumed a daily dose of 200 mL of a symbiotic shake containing 10 ( 8 ) UFC/mL Lactobacillus acidophilus , 10 ( 8 ) UFC/mL Bifidobacterium bifidum and 2 g oligofructose , while 10 other volunteers ( the placebo group ) drank daily the same amount of a shake that did not contain any symbiotic bacteria .\