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A breakdown of the percent nucleotide identity of T. equi genotypes based on the V4 hypervariable region of the 18S rRNA gene.
| Group | Designation | Percent identity within genotype | Closest T. equi genotype | Percent identity with closest T. equi genotype |
|---|---|---|---|---|
| Clade A | A | 93.2–99.5 | C | 85.0–94.7 |
| Clade B | B | 95.7–100 | A | 85.5–89.9 |
| Clade C | C | 91.0–100 | D | 88.2–95.1 |
| Clade D | D | 95.7–100 | C | 88.2–95.1 |
