<;P>;PROBLEM TO BE SOLVED: To obtain a food and beverage for immune function regulation, which protects a living body from bacteria, viruses or tumors occurring in the body. <;P>;SOLUTION: The cells of Lactobacillus helveticus SBT2171 strain (FERM P-14381) remarkably promote IFN&gamma; production, on the other hand, control IL4 production, remarkably control an IgE amount in a culture supernatant and have high activity of immune function regulation in comparison with other lactic acid bacteria. <;P>;COPYRIGHT: (C)2007,JPO&INPIT