Science Translational Medicine on Wednesday. The investigators scanned the genomes of individuals living in the Ganges Delta of Bangladesh and West Bengal in India, where cholera is prevalent. ScienceNow and the New York Times report that the researchers found 305 regions of the genome with changes due to cholera, evidence that natural selection made its mark on the genes over the past 5,000 to 30,000 years.Cholera is changing the human genome, according to research published in
For the first time, scientists were able to create functional human liver buds from stem cells, Reuters reports. Japanese researchers used embryonic stem cells and reprogrammed them to make the three cell types that form a liver in a developing embryo. When transplanted into mice, these liver "patches" connected to the mouse's blood vessels and performed liver functions, according to the New York Times. The research was published in Nature on Wednesday.