Fig. 2: Mice in space.

a A still image captured from a video recording of a C57BL/6J male mouse in microgravity in the ISS. b A still image captured from a video recording of a C57BL/6J male mouse under artificial 1 g conditions generated by a short-arm centrifuge in the ISS. These mice were housed in the mouse habitat cage unit for 35 days and these images were taken on day 5.