[The expression of MLC2-chymase fusion gene in cultured neonatal myocardial cells]..     ///     A series of MLC2-chymase fusion genes consisting of nested 5' deletion of the chymase promoter region were constructed and transfected into primary cultured neonatal Wistar rat myocardial cells according to the modified calcium phosphate precipitation method.     ///    The highest level of expression was found with the MLC2-chymase construct containing 6 bp of the chymase promoter region. 