A team of researchers at the University of British Columbia has found two types of enzymes that together, can transform type A blood to type O blood in the human gut biome. In their paper published in the journal Nature Microbiology, the group describes their metagenomic study of bacteria in human feces and what they found.
Click here for original story, Enzymes that can transform blood type A to O found in human gut biome
Source: Phys.org