 Since the discovery of the "L. rhamnosus" GG (ATCC 53103) strain, it has been studied extensively on its various health benefits and currently "L. rhamnosus" GG (ATCC 53103) strain is the world's most studied probiotic bacterium with more than 800 scientific studies.The genome sequence of "Lactobacillus rhamnosus" GG (ATCC 53103) has been decoded in 2009.In 1983, "Lactobacillus rhamnosus" GG was isolated from the intestinal tract of a healthy human by Sherwood Gorbach and Barry Goldin.