Spinning up an extragalactic neutron star.

growth. Colonization of pigskin or mouse skin with these protective commensals reduced S. aureus replication. Furthermore, autologous bacterial transplant in a small number of atopic dermatitis patients drastically reduced S. aureus skin burden. This commensal skin transplant has already been approved by the U.S. Food and Drug Administration, and a clinical trial is under way. —LP Sci. Transl. Med. 9, eaah4680 (2017). C E D IT S ( F R O M T O P ): B L E IC H E R T E T A L .; I M A G E S O U R C E /A L A M Y S T O C K P H O T O