通过比较两种类型耳垢的日本人的DNA，研究人员鉴定出了控制耳垢类型的基因，研究结果刊登在周一发布的《自然遗传学》期刊上。
By comparing the DNA of Japanese with each type, the researchers were able to identify the gene that controls which type a person has, they report in the Monday issue of Nature Genetics.
也有通过大样本人口的研究显示使用该产品可引起心血管疾病甚至死亡。
There are also studies among large populations that show cardiovascular disease and even death by using this product.
作者通过查阅资料、文献、结合本人多年的教学实践，对如何做好赛前准备活动进行了深入的研究，并就如何开展提出了具体的做法和个人见解。
The authors have done a deep research about how to prepare for sports before matches, with consulting a lot of data as well as the teaching experience for many years.
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