HISTOCHEMICAL LOCALIZATION OF CERTAIN OXIDATIVE ENZYMES IN THE RAT TESTIS

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Abstract
The localization and distribution of β-hydroxybutyrate dehydrogenase, succinic dehydrogenase, malic dehydrogenase, and lactic dehydrogenase in the rat testis have been studied histochemically. Intense enzyme activity in the interstitium as well as tubules was observed. However, malic dehydrogenase was found to be more active in the interstitium than in the tubules. The distribution pattern of enzyme activity appeared in four different phases in the seminiferous tubules corresponding to the gradient in the spermatogenetic wave, thereby indicating a metabolic adaptation at subcellular level.