Dietary intervention of mice using an improved Multiple Artificial-gravity Research System (MARS) under artificial 1？g

a Upper: a habitat cage unit (HCU) used in the first (left) and the second (right) JAXA mouse missions. Red arrows indicate the paper sheet covers. Middle: design of the paper sheet covers was modified to protect from tearing by mice. Lower; an improved transportation cage unit (TCU). b–e Environmental data. Temperature b and humidity c in the TCU and the HCU were recorded by data loggers. b Changes in temperature in the TCU and each cage of the HCU during the mission are shown. c changes in humidity in the TCU (orange) and microgravity (MG, in blue) and artificial 1？g gravity (AG, in yellow) sections of the HCU during the mission are shown. Gas concentration of carbon dioxide d and ammonia e in the Centrifuge-equipped Biological Experiment Facility (CBEF) were monitored as described previously1 and those in the MG (blue) and the AG (yellow) sections of the CBEF during the mission are show