I’m not sure what your objection is. The article pretty clearly qualifies its assertions that this phenomenon is observed in mice. Are you saying there is no possible way that these results could be recapitulated in humans?
I'm saying that we see article after article about breakthrough findings in mice, only to find out later that it doesn't apply to humans, and therefore findings in mice aren't particularly interesting news.
Except when they do apply to humans. For example, intracellular bacterial communities formed by uropathogenic E. coli were observed in mice before humans.