Formal vs. experimental diversity.

The number of randomized positions in each fragment library is indicated in brackets. The theoretical diversity represents the number of all possible combinations of 19 different codons by the given number of randomized positions. Fragment library B2(6) was used for the synthesis of L26; fragment library B2*(4)–for the synthesis of L24.Formal vs. experimental diversity.每个片段文库（fragment library）的随机化位点数量以括号标注。理论多样性指的是：基于给定的随机化位点数目，19种不同密码子（codon）所能形成的全部组合数目。片段文库B2(6)用于L26的合成；片段文库B2*(4)则用于L24的合成。形式多样性与实验多样性。