The Connexin46 Mutant, Cx46T19M, Causes Loss of Gap .
Axioplan 2 microscope (Carl Zeiss Inc., Mu¨nchen, Ger-many) equipped with a mercury lamp, and images were acquired with a Zeiss AxioCam digital camera and Zeiss AxioVision software (Carl Zeiss Inc.). Figures were assembled using Adobe Photoshop CS3 Extended (Adobe Systems Inc., San Jose,