MegMilk Snow Brand's flagship probiotic yogurt is Megumi and contains both a L. gasseri strain as well as a bifidobacteria strain. L. gasseri SP (or SBT 2055) is human (Japanese) derived and has been shown to persist in the human digestive tract far longer than other probiotic strains. In fact, they say it is the first of its kind in the world. The bifidobacteria is a proprietary strain. ガセリ菌SP株 ビフィズス菌SP株 雪印メグミルク http://www.meg-snow.com/products/yogurt/7f5ae.html Photo is a web capture for explanatory purposes, copyright belongs to the company.