Rodent Research-19 (RR-19): The crew Installed four Rodent Habitats into the Express racks 1 and 2A. This study uses rodent models on the ISS to investigate the potential benefits of targeting the myostatin (MSTN) and activin signaling pathways to prevent skeletal muscle and bone loss during spaceflight and on the recovery of muscle and bone …

Source: ISS Daily Summary Report - 12/09/2019