Below is the sequence that is deleted in the 3687bp lin-28Δ1 excision allele: cgtctacattccccgctgcccacaacaaacgtgttttgtgttccaaaaaaagcgacaacaaattcaataggaaatcttat caaactgattgctgattggctgtgcgatcgccctaatatttggtttctgtttttgtctggttttttttttttttatactg cgcagttctttttttgctggcgtatgtttttcttggtttctgttgtgtttttgccattcgctgatttgattttttattgg taaattggggggtttctatatacagaggtgtcatcaacccccgaacattgaccgacttaccatcacacttcgatcaagga cacaggcagtccagttgaggattatcctcgcctcaatgcatttgaggcattagatctgcgcagacttacaaacctaattg aacggggaaaccagtttgcggcttacctataagaaaaggaaaaggacacccaaccatcccaaaaggataatcatgtaatg gtggtggtttgagtaaagaatgaaagattttcattcaattaggtttcttatcagacgcaaaagaatttccaagatcttaa aagtccattcacgttctcgctggaaatgagtaagaaaatgcttgagcagcacaacgacctagaaatgccagcgcaacccc cgaaaatgaaaattttaattccagataagccagagcacaggcatgagaatgcattccgagtatctgggcatctgggcaat actacgagtacactcaagtactagggcccacttcgacaaatatatagataagctggcagcgaaatgggagcgagcgaagt gaaaacaatttatgaatgaatgaatgaatgaatgaatgagccagcccaaatggatatgggctggtgcgagtgtgtgagtg agatgagcccctgcttagataatggaatgaatccactccgccgcgccgctcgttcagttatttccgaatatttcttataa taacaacgaaacctgttttctgccctcaatgggcgttgagttgggatggggacgtggagggctagagaagaacctaaccc aagttgaacttgcctcgcggcaaatggggcaaggacacgatgaatgttgttcagctgcctatttgccgcttggtcatttg aataacaaaaccttgaacagagggattcccagacaggatatcgaattgggcaccgaactcaagtttcattttctattccc tccagcgaatccggcaaatcttgcgagtcccaccgaggaatgcggttgtgtgcgactgggcaaatgcaaatggttcaacg tggccaagggatggggcttccttacacccaacgacggcggccaggaggtgttcgtccatcaggtgggtactctctttctt ggatgaaactgaggtctttccttaatgcaaggccttatgtactatccgatagaatatggaaaatcggtataataatttaa tatttaatgcattaattcaatataattctcattataaacgtatgcatatagagcgtcatccagatgtcaggtttccgatc actgggcgagcaggaggaggtggaattcgagtgccagcgcacgtcgcgcggattggaggccaccagggtgtccagcaggc atggcggtagctgccaaggcagcacctacaggccgcgaatgtgagctcatacccaatcgtttaactaattttccccattt tcaccacctacccaccaaccacccaacagaaatcgccggactcgccgcatgcgctgctacaactgcggcgaattcgccaa tcacattgcctccgaatgcgctttgggtcctcagccgaagcgctgtcatcgctgccgtggagaagaccatctccatgccg actgcccgcacaagaatgtggtaagtgctcctctacgattccacagccccatttcgaggactaagcccacatcgtttcgc agacccaaagccacagtaatagcaaaagcataagcaacaatagcagcagcagtgcagcccaagagaagagcgaggaggcc acctaggaagtccttggatcttggactggtagttggaagttagaaacttccttgacaagtacaaaatggaaatctaagaa aaaacacgcatcaaatcaaagaaacccacgtacaacaaaactagctactacacttagatattagcgggaagagacgcgcc ccgaaaaccatcctatcctaagtttattttctattttaacattattttctaggaaccatagttgctaaggtttttcacta gatcccaagtaaacgaattaagctagagagcatcccttggtctgttttttgaaatcggagcttttgcaccctggggccga actaaaagctctgtgctgataagaaagtcctggtcgcgagtcacgtggccactgacaacaatggagctttccttggggca acaacaaacagctacaaatggaatcaccatgaaaacgcagaatcactgtgtaagcttggaaacctgaaacccgccgctcc cggcgctaaagtcagcacccaccaccccctgaaagtgaaacatagtgagcagcagcaacaacaaacggattgggcgagga catggccaggaggagcagggaaagggaaagtcctgcctttttttggtcgctctctttttctctctctctttttctccagc tgcctctctgcctcttggctcttggcccttttggctgtttttgttgtggtttagtttgcaacattttgttcgggctcgct ctctcgcgatttttgtccttcgccaaggaagcaggagcaggatacccaaaaggatgcaactaaggccagcgtcgagctca gtctcagttgatctctgccagagaattgttgtgtgcaacgcggcggaatttacatttacaccatattaacacagaaaaat atgaagacccaaaaataaaggaccctcaagtccaattatcaaacttaaccaaaaacaataacttagacaactaaaagaat ttcaacaaagttaacaaagcgtttcagcaacaaattttcaaaaacccacaaaccccaaaaccaaaaaaaaaaccattaaa aaaattaaaattacacaaagtaaacggaaaaagtttgtacaattttttttttttggcataaaatgaaaacagtttttcaa cgcataagttatacaaatatggaaaggaaaaatgctggcgaaaactaagagttcaaggttaaaagaaaatgagaaaatta cctttttaactgggcaaacaataataaagcatcagcatccactgatagaaaacaataacaataacaatagcaacgtcaac gtcatcgcatattcatttgggccaaaccacaaccactcgtacccacacacaagcacacacaagagcacaacaacaccaac acacccagaggcacacaaacacacacacacacacacactgggaatttacaaccagatttacatggggagcgcctgttatg taatatcctccttctgacgctgtctcctgtcatgttccaagtccttgttccttgttccctgtccccatttctcgatttcg cgattctcgcgtacgtgtgagtgtgtgtctgtttgcgtgtgtgtgtgttttgggggtgtggcatggcatgcacctcggat ttgctgcccctacgggtgctaatttgatttaactcgctgcatgggcacggcattgagacaccacgacgaaggacgaagga cactggc