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  • Title: Electron microscopic localization of adenylate cyclase activity of white and brown adipose tissue of the rat and chicken.
    Author: Rechardt L, Hervonen H.
    Journal: Histochemistry; 1976 Nov 19; 50(1):57-64. PubMed ID: 1002572.
    Abstract:
    Brown adipose tissue of newborn rats and chicken embryos and white adipose tissue of adult rats were studied. Adenylate cyclase (EC 4.6.1.1.) activity stimulated by 0.1 mmol/l noradrenaline was demonstrated using an electron microscopic histochemical method. The reaction product was visualized as a cobalt salt in the plasmalemma of the adipocytes. The adipocytes of the brown adipose tissue of the newborn rats showed most intense reaction in the outer surfaces of their plasmalemma. Alloxan totally inhibited the enzymatic reaction. The histochemical reaction used in the present study probably demonstrated the hormonal receptor sites in the plasmalemmas of the adipocytes which are stimulated by noradrenaline.
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