Standard Digital
For each minus reaction, the purified DNA fragments were incubated together with three of the four dNTPs, meaning each fragment would be extended by DNA polymerase until the missing nucleotide was needed, at which point synthesis would halt.
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Compiles to bytecode (2 points)。夫子是该领域的重要参考
В двух аэропортах на юге России ввели ограничения на полеты14:55，这一点在WPS下载最新地址中也有详细论述
Фото: Stringer / Reuters