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Figure 6 Analysis of the expression of Cypher/ZASP isoforms in human heart. The Cypher/ZASP exons were detected in human cardiac ribonucleic aid by reverse transcription-polymerase chain reaction (A) and Northern blot analysis (B). The exons identified are shown at the bottom of each panel. M = 100 bp deoxyribonucleic acid ladder (A). Positions of ribonucleic acid size markers are indicated (B).