甲基化样品能否在血液样本被发现？
Can altered methylation patterns be somehow detected in blood samples?
于是在第二轮的C - 14分析中，莱维提供了两倍的样品数量，又细致的选择了来自于带有可检验外层年轮的灌木木炭样本。
For his second round of C-14 analysis, Levy doubled the number of samples and meticulously selected charcoal from shrubs with verifiable outer growth rings.
但有没有样本大小的方法，你会用它来选择你的样品，可能作出的反应率，潜在的变量和因变量的信息。
But there is no information about your sample size, the method you will use to select your sample, the likely response rate, potential independent and dependent variables.
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