| Rnu1b2 / U1b2 small nuclear RNA | ENSMUSG00000093834 | 79 |
| Rnu1b1 / U1b1 small nuclear RNA | ENSMUSG00000095580 | 79 |
| Gm22042 / predicted gene, 22042 | ENSMUSG00000064923 | 78 |
| Rnu1b6 / U1b6 small nuclear RNA | ENSMUSG00000065773 | 78 |
| Gm26110 / predicted gene, 26110 | ENSMUSG00000065905 | 78 |
| Gm24924 / predicted gene, 24924 | ENSMUSG00000094306 | 78 |
| Gm22614 / predicted gene, 22614 | ENSMUSG00000094812 | 78 |
| Gm25890 / predicted gene, 25890 | ENSMUSG00000095260 | 78 |
| Gm24830 / predicted gene, 24830 | ENSMUSG00000095701 | 78 |
| Gm22513 / predicted gene, 22513 | ENSMUSG00000096349 | 78 |
| Gm26232 / predicted gene, 26232 | ENSMUSG00000096838 | 78 |
| Gm25587 / predicted gene, 25587 / RNU1-16P* / RNA, U1 small nuclear 16, pseudogene* | ENSMUSG00000064432 | 77 |
| Gm23238 / predicted gene, 23238 / RNU1-22P* / RNA, U1 small nuclear 22, pseudogene* | ENSMUSG00000064941 | 77 |
| 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 | 77 |
| Gm23804 / predicted gene, 23804 | ENSMUSG00000094826 | 77 |
| Rnu1a1 / U1a1 small nuclear RNA | ENSMUSG00000095969 | 77 |
| Gm25818 / predicted gene, 25818 | ENSMUSG00000096147 | 77 |
| Gm22068 / predicted gene, 22068 | ENSMUSG00000096205 | 77 |
| Gm22317 / predicted gene, 22317 | ENSMUSG00000096206 | 77 |
| Gm22634 / predicted gene, 22634 | ENSMUSG00000096214 | 77 |
