Should a lab be so fortunateas to discover a molecule that cures a disease in a lab rat, the next step isto test its toxicity and efficacy in more lab animals.
They injected another group of mice with MPTP, a molecule that simulates the effects of Parkinson's disease.
她们对另外一组老鼠注射了MPTP药物，这是一种激发产生帕金森症的分子。
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At the end of the experiment, a little girl told me, "Apart from the fact that improper replication of the DNA molecule causes genetic disease, we have understood nothing else."