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| PR:Q8WXW3 | progesterone-induced-blocking factor 1 (human) | | |  | | |
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| PR:Q8WXW3-4 | progesterone-induced-blocking factor 1 isoform h4 (human) | | |  | | |
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| PR:Q8WXW3 | progesterone-induced-blocking factor 1 (human) | | |  | | |
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| PR:Q8WXW3-4 | progesterone-induced-blocking factor 1 isoform h4 (human) | | |  | | |