Very cool paper! I really enjoyed the the S. xylosus story line. We find it a lot on cheese rinds and I think it is an understudied Staph. (see here for a recent paper from our group on this species: doi.org/10.1038/s413...) Do you think most lab mice have S. xylosus in their skin microbiome?

Thanks! I'll have to check out what it's doing on cheese. I don't know about most labs - but in our facility we can routinely recover S. xylosus both from the hairy, healthy skin of mice housed in the facility and from surfaces (lab benches, housing racks).