This Start-Up Wants You to Put Custom Bacteria on Your Teeth
Lumina Probiotic has said a genetically modified microbe could prevent cavities. Experts, though, have safety concerns
![This Start-Up Wants You to Put Custom Bacteria on Your Teeth](https://static.scientificamerican.com/dam/m/38a140bf54190f46/original/GettyImages-1141943560_WEB.jpg?w=1200)
Lumina Probiotic has said a genetically modified microbe could prevent cavities. Experts, though, have safety concerns
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