Bifidobacteria is a bacteria known for down regulating inflammation related genes most noticeably in infants. In 2015 a group of scientists decided to test which carbon source the bacteria grew on, made the organism the most effective at gene regulation. Two types of bifidobacteria were tested, B. beves and B. infantis, and each were feed three separate carbon sources: lactose, glucose, and HMO. HMO, which is found in breast milk, was determined to be the best carbon source for both types of bifidobacteria because it significantly increased the gene regulating power of the bacteria. This video provides an overview of the experiment and its findings.