three enzymes selected as representative of major metabolic pathways ( malic dehydrogenase , of the citric acid cycle , lactic dehydrogenase , of glycolysis and glucose-6-phosphate dehydrogenase , of the pentose pathway ) were measured by quantitative histochemical methods in individual hypothalamic nuclei during the 5-day estrous cycle of adult rats .
C0024544
malic
C0030016
dehydrogenase