[Conformational changes in the membranes of cells infected with Newcastle disease virus]

Studied were the conformational changes in the membranes of BHK cells infected with two ND virus strains varying in their virulence, by means of determining the binding sites in the membranes with the fluorchrome ANS. These changes set in immediately after the adsorption of the strongly virulent strain Petleshkov as well as from the second to fourth hour following the infection of the cells with the less virulent strain Rousseff. It is believed that such changes in the membranes of infected cells are due to the invasion of the virus into them, which is accompanied by fusion.