Evidence for positive selection in <i>I. ricinus</i> IxAC coding sequences.

Pairwise dN and dS values were calculated using the Nei-Gojobori method as implemented in the Mega3 package. dN/dS ratios are indicated in the upper right triangle. Fisher's test P values are indicated in the lower left triangle. A putative ancestral coding sequence for I. ricinus anticomplement proteins was inferred from an alignment of the IxAC from I. ricinus coding sequences using the Ancescon package.采用Mega3软件包所实现的奈-五野法（Nei-Gojobori method），计算得到成对非同义替换率（dN）与同义替换率（dS）数值。右上三角区域标注dN/dS比值，左下三角区域标注费希尔精确检验的P值。利用Ancescon软件包（Ancescon package）对取自蓖麻硬蜱（Ixodes ricinus，I. ricinus）编码序列的IxAC进行序列比对后，推定得到蓖麻硬蜱抗补体蛋白的推定祖先编码序列。