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The specifications of the five selected marks based on the step data
| Mark | Type | Ref† | Protein |
|---|---|---|---|
| v1 | Epipred | HXB2 | Env-Rev-Tat-Vif-Vpr-Vpu |
| v2 | NetMHC | HXB2 | Env-Rev-Tat-Vif-Vpr-Vpu |
| v3 | Epipred | Step | Gag |
| v4 | Epipred | Step | Pol |
| v5 | Epipred | Step | Nef |
†The reference HIV-1 sequence, either a sequence represented in the vaccine tested in the Step trial (Step) or a commonly studiedcentral HIV reference sequence that was not in the vaccine (HXB2).
