Mapping of GHRLOS transcript 5' and 3' ends. Relative positions of the 5' and 3' ends of GHRLOS transcripts were derived from RACE, inverse PCR and cDNA primer walking RT-PCR experiments, as well as from publically available data from EST databases, Affymetrix exon arrays and CAGE tags. TATDN2 exons are shown as white boxes, GHRLOS exons as black boxes, introns as horizontal lines. Size (bp) of selected exons are shown above each exon. All known 3' ends of GHRLOS transcripts contain the same polyadenylation signal. Poly(A) tails are represented by AAAA. Cap-analysis gene expression (CAGE) tags are indicated by arrows, and CAGE-aided cDNA primer walking amplicons are displayed below the arrows. Not drawn to scale.