Figure 2  Preferential use of the AGY triplets among CDR sequences in the Ser reading frame. (A) Schematic of how AGY triplets in the different reading frames were determined at CDR boundaries. AGY triplets at CDR boundaries were counted in non-coding frames if one or two bases were located in the CDR. (B) Numbers of in-frame Ser AGC codons compared to combined numbers of AGC triplets in two non-coding frames. (C) Same analysis as in (B) applied to AGT. Box plots and whiskers were defined in Figure 1 and in Section “Materials and Methods.”