Assembly of NILT-containing BAC clone. a. Graphic illustration of the orientation and the number of contigs (ctg) after assembly. b. Genomic organization of the Atlantic salmon (Ssa) NILT genes identified in BAC clone S0024B13. Contig 3 contains a partial and a full-length predicted NILT. Contig 4 contains four full-length NILT genes, one partial NILT gene and two NILT pseudogenes.