Cohousing or cross-fostering followed by cohousing does not normalize the microbiomes of genetically distinct adult mice.

17 We analyzed their publicly available metagenomic data to determine how different the microbiomes were between B6J and BALB/c mice and found that at 3 days of age, when fecal microbiomes are still relatively simple, B6J had a clear trend of higher frequencies of Lactobacillaceae and lower frequencies of Pasteurellaceae compared to BALB/c pups not yet reaching full statistical significance ( Figure S5I ; Table S8 ).

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