Figure 2

Detection of JSRV RNA in lung slice supernatants indicates replication of JSRV. JSRV was added to lung slices and medium changed daily. The results show JSRV RNA content of 24 h supernatants (pooled from 4 wells) presented as a percentage of the inoculum (100%) for lung slices prepared from 6 animals of a range of ages; 9 months old (1 J and 2 J), 10 years old (3 J), 2 years old (4 J), and 5 days old (5 J and 6 J). Results for the equivalent JSRV-∆RT-treated lung slices are not shown as these were all negative after day 4. Control lung slices to which no JSRV was added were negative throughout. The results shown here are for the lung slices from the same experiments that provided the lung slices for serial sections.