Mount Sinai Health System Oct 22 2025 Researchers at the Icahn School of Medicine at Mount Sinai and their collaborators have developed a new technology to track beneficial bacteria after fecal microbiota transplants (FMT). The approach provides a detailed view of how donor microbes take hold and persist in the patients' gut-not only which bacteria successfully colonized but how they change over time. These insights may guide the design of safer and more effective microbiome-based therapies.