Scientists discover hidden link between gut bacteria and vitamin B12, raising hope for probiotics Moneycontrol‘Hidden’ group of gut bacteria may be essential to good health New ScientistScientists discover a hidden gut bacterium linked to good health ScienceDailyUncultured Gut Microbe Diversity Linked to Health in Metagenomics Meta-Analysis GenomeWeb‘Hidden’ bugs appear to play a central role in keeping us healthy (IMAGE) EurekAlert!