Table 2. Similarities of nucleotide and amino acid sequences of PD-L1 among mammalian species.

	Horse	Pig	Cattle	Water buffalo	Dog	Human	Monkey	Mouse	Rat
Horse	-	88.8	87.8	87.3	88.1	86.6	85.2	75.6	75.7
Pig	81.5	-	88.1	88.2	85.1	84.3	83.3	74.4	75.5
Cattle	80.9	81.3	-	98.2	84.0	83.0	81.8	73.8	75.2
Water buffalo	79.9	80.6	96.5	-	83.7	82.3	81.5	74.2	75.7
Dog	83.7	76.8	78.5	77.8	-	83.2	82.1	73.4	74.5
Human	79.0	73.3	73.1	72.0	75.9	-	95.7	76.3	76.4
Monkey	76.6	71.6	72.7	72.0	74.2	91.3	-	75.2	75.3
Mouse	67.9	67.4	65.1	66.2	67.0	69.4	68.3	-	87.3
Rat	68.3	67.4	67.3	67.6	68.1	69.7	68.3	83.4	-

Upper section; similarities (%) in nucleotide level, lower section; similarities (%) in amino acid level.