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. 1999 Apr 5;145(1):191–201. doi: 10.1083/jcb.145.1.191

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Schematic representation of the cloned genomic region from 35A1. (A) The chromosomal region of 110 kb surrounding the wb gene is shown, along with three P element mutations and two P1 phages. The left end of DS 03792 was arbitrarily chosen as position 0. Underneath the DS phages, the relative position of four STSs are indicated. Vertical bars correspond to EcoRI sites. (B) Intron–exon structure of the wb gene. 15 exons are observed. (C) Intron–exon structure of the trans-spliced transcript observed in l(2) 09437 or l(2) 10002 animals (Fig. 3 B) yielding a composite transcript between the first four exons of wb and the last exon of S12.