. "Any process that activates or increases the frequency, rate or extent of cardioblast differentiation, the process in which a relatively unspecialized mesodermal cell acquires the specialized structural and/or functional features of a cardioblast. A cardioblast is a cardiac precursor cell. It is a cell that has been committed to a cardiac fate, but will undergo more cell division rather than terminally differentiating." . . . "positive regulation of cardioblast differentiation" . "activation of cardioblast differentiation" . "stimulation of cardioblast differentiation" . "up regulation of cardioblast differentiation" . "up-regulation of cardioblast differentiation" . "upregulation of cardioblast differentiation" . . . .