Northern blots of EGO transcripts. Northern blots of TF-1 cell poly A+ RNA hybridized with radiolabeled probe specific for panel A, EGO-A (1 kb), and panel B. EGO-B (1.7 kb). Sequenced splice junction of EGO-B is 4767665 TTCTATCAG…. GCACGATGGT 4766655 and 5′ end of EGO as determined by PCR is 4768306 TTCAAACAG (Figure S2).