Astronauts Nichole Ayers and Takuya Onishi collect blood samples

iss073e0284440 (July 8, 2025) --- Expedition 73 Flight Engineer Nichole Ayers of NASA and International Space Station Commander Takuya Onishi of JAXA (Japan Aerospace Exploration Agency) collect blood samples for the Immunity Assay human research investigation. The study will analyze the blood samples for signs of space-caused stress on cellular immune function to help doctors monitor crew health and keeps crews healthy on long term space missions.