It is well known that the sodium current (I(Na)) and the degree of gap-junctional electrical coupling are the key determinants of action potential (AP) conduction in cardiac tissue. Immunohistochemical studies have shown that sodium channels (NaChs) are preferentially located in intercalated disks (IDs). Using dual immunocytochemical staining, we confirmed the colocalization of NaChs with conne...

Ionic conduction mechanism of Mg-Al layered double hydroxides (LDHs) intercalated with CO32− (Mg-Al LDH) was studied. The electromotive force for the water vapor concentration cell using LDH as electrolyte showed partial pressure dependence and obeyed Nernst equation, indicating that hydroxide ion transport number is almost unity. ionic conductivity Mg(OH)2, MgCO3 Al2(CO3)3 also examined. Onl...