Fig. 4
From: Analysis of codon usage bias of thioredoxin in apicomplexan protozoa
PR2-bias plot analysis in apicomplexan protozoa Trxs. The correlations between A3/(A3 + U3) and G3/(G3 + C3) were analyzed in apicomplexan protozoa Trxs, respectively. If the codon has no usage bias, A = T and C = G, the value was in the center point of the plot. The first quadrant represents the codon preference of A/G, and the third quadrant represents T/C preference. X-axis represents GC3%, while Y-axis represents GC12%. A Babesia spp., B Cryptosporidium spp., C Eimeria spp., D Plasmodium spp., E Theileria spp., F others (including Besnoitia besnoiti, Cyclospora cayetanensis, Gregarina niphandrodes, Hammondia hammondi, Neospora caninum, and Toxoplasma gondii)