After experimenting with more than a dozen different formulations, drying them with custom-made machinery and heating them in ovens to test shelf life, Nektar hit upon a successful recipe that mixes insulin with glycine (an amino acid), citrate (the salt of an organic acid found in humans) and mannitol (a sugar used in intravenous products).

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Not only will the mission test how commercial, off-the-shelf tech can survive in the vacuum and conduct experiments, but it'll squeeze in some fun courtesy of apps developed by winners of a competition held last year.

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