Muna 1985, Mukai akasarudzwa semumwe wevatatu veJapan Payload Specialist vakakwikwidza kuFirst Material Processing Test (Spacelab-J) iyo yakabhururuka muSTS-47. Akashandawo seye backup payload nyanzvi yeNeurolab (STS-90) basa. Mukai akapinda maawa anopfuura 566 muchadenga. Akabhururuka muSTS-65 muna 1994 uye STS-95 muna 1998. Ndiye mukadzi wekutanga wechiJapan kubhururuka muchadenga, uye mugari wekutanga wechiJapan kubhururuka kaviri.Semuchadenga weNASDA, aive musayendisiti anoshanyira Dhipatimendi reCardiovascular Physiology, Space Biomedical Research Institute, NASA Johnson Space Center, kubva muna 1987 kusvika 1988.
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