Downii is a newly identified bacterial species, Streptococcus downii sp. nov., discovered in the dental plaque of individuals with Down syndrome. Research has highlighted its potential anti-biofilm and antibacterial properties, suggesting it could be significant in oral health applications, particularly for those with physical or intellectual disabilities. The company or research entity behind Downii focuses on exploring the probiotic potential of this bacterium, aiming to develop new oral health products.