Zuker and his colleagues posed a natural evolutionary question: Why would mammals have developed such an excellent carbon dioxide detector?
朱克和他的同事提出了一个自然演进的问题：为什么哺乳动物会衍变出这么优秀的二氧化碳探察功能呢？
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The researchers, led by longtime taste researcher Charles Zuker, now at Columbia University Medical Center, conducted the study using mice that had been genetically altered to lack sour-sensing cells.