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Troponin expression in mouse vascular smooth muscle. RNA preparations from thoracic aorta, heart and skeletal muscle (quadriceps) were assayed using RT-PCR for the presence of muscle markers and different troponin transcripts. Each panel is an autoradiograph from an individual polyacrylamide gel. The ubiquitously expressed GAPDH sequence acts as a loading control. Lane marked–RT is the minus reverse transcriptase control reaction.
