Rodent Research-8 (RR-8): Today a crewmember performed restock of Rodent Habitats 3 and 4. A crewmember also consolidated samples for return. The Rodent Research-8 (RR-8) investigation utilizes mice flown aboard the ISS, and maintained on Earth, to investigate the physiology of aging in response to microgravity and the role of aging in the onset and …