Effect of Probiotic Fermented Dairy Drinks on Intestinal Immune Response

Inclusion Criteria: * Healthy male/female subjects aged from 18 to 45 years (bounds included). * Subjects with none of the symptoms of gastrointestinal infectious diseases * Subjects with a body mass index (BMI) between 19 and 30 kg/m² (bounds included). * Subjects who accept to be submitted to an alimentary restriction of product with OTC and foods containing probiotics and/or prebiotics * Subjects who regularly consume and appreciate dairy products * Subjects who have not consumed any products or OTCs containing probiotics within the last three months. Exclusion Criteria: * Subjects in a situation that, in the investigator opinion, could interfere with optimal participation in the present study (e.g. non dairy-products consumer) or could constitute a special risk for the subject. * Subjects with allergies or hypersensitivity to any component of the study product (e.g: allergy or hypersensitivity to milk proteins, or lactose intolerance) * Subjects with any food allergy * Subjects with auto-immune or with chronic disease or with a history of chronic metabolic or gastrointestinal. * Subjects who have had any surgery or intervention requiring general anaesthesia in the last 4 weeks.. * Subjects with special diet requirements * For female subjects: pregnancy, breast feeding or no method of contraceptive used * Subjects participating in any other interventional study concomitantly or within 4 weeks of the study entry date.