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| PR:O74968 | U1 small nuclear ribonucleoprotein usp102 (Schizosaccharomyces pombe 972h-) | | |  | | |
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| PR:P08579 | U2 small nuclear ribonucleoprotein B'' (human) | | |  | | |
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| PR:P08579-1 | U2 small nuclear ribonucleoprotein B'' isoform 1 (human) | | |  | | |
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| PR:Q9CQI7 | U2 small nuclear ribonucleoprotein B'' (mouse) | | |  | | |
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| PR:Q9CQI7-1 | U2 small nuclear ribonucleoprotein B'' isoform 1 (mouse) | | |  | | |
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| PR:000038743 | U2 small nuclear ribonucleoprotein B'' isoform 1 | | |  | | |
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| PR:P08579-1 | U2 small nuclear ribonucleoprotein B'' isoform 1 (human) | | |  | | |
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| PR:Q9CQI7-1 | U2 small nuclear ribonucleoprotein B'' isoform 1 (mouse) | | |  | | |