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| PR:P60608 | endogenous retrovirus group FC1 member 1 Env polyprotein (human) | | |  | | |
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| PR:000083890 | endogenous retrovirus group FC1 member 1 Env polyprotein deaminated 1 (human) | | |  | | |
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| PR:P60608-1 | endogenous retrovirus group FC1 member 1 Env polyprotein isoform h1 (human) | | |  | | |