Human testing isn't always about drug trials. Researchers have also been very interested in issues such as healthy subjects 'physiological responses to extreme environments, and the pathogenesis and progress of diseases.
除了藥物測試外，關於健康人對各種極限環境的生理反應、疾病的致病機轉與進程等，也都是研究者亟欲瞭解的事。