Microbiome studies not as simple as one might think

Researchers who set out to find clues to Sjögren’s syndrome from oral microbiota say the patients’ oral microbiome is determined more by their lack of saliva than the disease.

Dutch researchers examined the bacterial diversity of mouth-washings from 36 patients with Sjögren's, 85 others assessed for the disease who were found not to have it, and 14 controls who had no oral dryness.

There was considerable heterogeneity in bacterial composition in the Sjögren’s patients and in the others who had

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