It's not just the presence of bacteria that can lead to disease; their spatial arrangement also matters. When scientists examined the bacteria that causes tooth decay, they found it 'shields' itself under blankets of sugars and other bacteria in a crown-like arrangement, helping it evade antimicrobials and concentrate its tooth-damaging acids.
from Health & Medicine News -- ScienceDaily https://www.sciencedaily.com/releases/2020/05/200518154937.htm
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