Succinic dehydrogenase activity in liver, kidney and brain of rat

A method is described for histochemical quantification of the activity of succinic dehydrogenase in various tissues of rat by means of Nitroblue tetrazolium. This method can be used for comparison of enzyme activities; the activities calculated correspond to values obtained by biochemical methods. The necessity to quantify the "nothing dehydrogenase" is established as well as the amount of half-formazan.