Sequence comparison between chickens and mice from CD81/TAPA1 to IGF2 (A) and from MRPL23/L23MRP to LSP1 (B). Percent identity plot analysis was done using the PipMaker software using the chicken sequence as a reference. The order and arrangement of the chicken genes are shown at the top. The dots and short horizontal bars correspond to the segments of sequence conservation. The regions corresponding to the exons and introns of the chicken genes are shown in green and yellow, respectively. Conserved sequences in the noncoding regions, including those in introns, are circled.