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ţƤѢΪʲôƤ?ţƤѢһֳƤƤλҪںϷֶɫмݵ飬ţƤѢķռ˿ڵ0.1%3%˷Ϊ0.1%0.3%òȺеķʰԸڻˣ˴֮ôţƤѢΪʲôƤ?

ţƤѢ䲿λƤϸֳ٣ʹƤϸʱ̣ƤϸлʱΪ26--28죬ţƤѢƤʱΪ3--4죬Ƥϸijܵţ±Ƥ֯ϵлͽǻңɴ˲ŻƤ𴦵ɫм

ţƤѢıƤϸѸһֳΪ"ష"ֱйءషϸѧеҪʣDNA.RNAʵлйأڶԭ򣬵¶షϳɼŨӣషϸкᡢʽһͨøӦֱãϸѼ٣ϸʱ̣ ѭȥͳƤ

ţƤѢƤʱijЩ̼ɢţƤѢɢܶӰ졣ܶ໼ΪƲɢ⻼ճвעԤʳûнɣȾƳ̡ԺʵҲԵţƤѢɢԤţƤѢIJأҪеϸڿʼԤҪѡ淶ţƤѢ

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