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| PR:000001820 | MHC class II histocompatibility antigen alpha chain | | |  | | |
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| PR:000008612 | MHC class II histocompatibility antigen, DO alpha chain | | |  | | |
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| PR:P06340 | HLA class II histocompatibility antigen, DO alpha chain (human) | | |  | | |
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| PR:000071975 | HLA class II histocompatibility antigen, DO alpha chain cysteinylated 1 (human) | | |  | | |
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| PR:P06340 | HLA class II histocompatibility antigen, DO alpha chain (human) | | |  | | |
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    |
| PR:000071975 | HLA class II histocompatibility antigen, DO alpha chain cysteinylated 1 (human) | | |  | | |