Acholeplasma laidlawii Cells Acutely and Chronically Infected with Group 1 Acholeplasmavirus

p. 1714, last paragraph of Methods:

The second sentence should read : ‘Polypeptide profiles of these cell preparations were obtained by SDS-PAGE (Liss & Heiland, 1982), modified by using glass-distilled water instead of 8 m-urea in the formulation of the separating gel and the sample preparation solution’.