| Gm23238 / predicted gene, 23238 / RNU1-22P* / RNA, U1 small nuclear 22, pseudogene* | ENSMUSG00000064941 | 84 |
| Gm24924 / predicted gene, 24924 | ENSMUSG00000094306 | 84 |
| Gm26444 / predicted gene, 26444 / RNVU1-6* / RF00003* / RNVU1-1* / RNVU1-3* / RNVU1-4* / RNA, variant U1 small nuclear 1* / RNA, variant U1 small nuclear 3* / RNA, variant U1 small nuclear ... | ENSMUSG00000093815 | 83 |
| Gm23804 / predicted gene, 23804 | ENSMUSG00000094826 | 83 |
| Rnu1a1 / U1a1 small nuclear RNA | ENSMUSG00000095969 | 83 |
| Gm22068 / predicted gene, 22068 | ENSMUSG00000096205 | 83 |
| Gm22317 / predicted gene, 22317 | ENSMUSG00000096206 | 83 |
| Gm22634 / predicted gene, 22634 | ENSMUSG00000096214 | 83 |
| Gm25679 / predicted gene, 25679 / RNVU1-6* / RF00003* / RNVU1-1* / RNVU1-3* / RNVU1-4* / RNA, variant U1 small nuclear 1* / RNA, variant U1 small nuclear 3* / RNA, variant U1 small nuclear ... | ENSMUSG00000096659 | 83 |
| Gm25189 / predicted gene, 25189 | ENSMUSG00000065845 | 82 |
| Rnu1b2 / U1b2 small nuclear RNA | ENSMUSG00000093834 | 82 |
| Rnu1b1 / U1b1 small nuclear RNA | ENSMUSG00000095580 | 82 |
| Gm24305 / predicted gene, 24305 | ENSMUSG00000095590 | 82 |
| Gm26244 / predicted gene, 26244 | ENSMUSG00000095616 | 82 |
| Gm25818 / predicted gene, 25818 | ENSMUSG00000096147 | 82 |
| Gm22513 / predicted gene, 22513 | ENSMUSG00000096349 | 82 |
| Gm23686 / predicted gene, 23686 | ENSMUSG00000096391 | 82 |
| Gm22042 / predicted gene, 22042 | ENSMUSG00000064923 | 81 |
| Gm22614 / predicted gene, 22614 | ENSMUSG00000094812 | 81 |
| Gm25890 / predicted gene, 25890 | ENSMUSG00000095260 | 81 |
