Abstract
The 11.8 kilobase pair (7.8 x 106 mol. wt.) genome of mycoplasma virus L2 in lysogenic Acholeplasma laidlawii cells was examined. For this study, DNAs were analysed by agarose gel electrophoresis and viral DNA sequences identified by DNADNA hybridization. L2 DNA was found to be integrated into the lysogenic host cell chromosome at a unique site in both viral and cellular DNA. The viral DNA site was roughly mapped and the approximate time of integration during the L2 non-cytocidal infectious cycle was determined.