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[Restriction fragment length polymorphism analysis of ventricular myosin light chain 1 gene in families with congenital heart disease].

Genomic DNAs isolated from 9 families and 13 unrelated individual patients with 4 different types of congenital heart disease were examined by Southern blot analysis using a cDNA probe which codes for the full length human ventricular myosin light chain 1. Restriction fragment length polymorphisms were detected in two families and were not associated with any type of congenital heart disease.