FIG 5.

Titration of brain and lung samples from AC animals shows high virus titers in the brain. In experiment 3, two AC animals became infected and developed neurological disease requiring euthanasia. Both ferrets were subjected to necropsy. Brain and lung samples were collected for titration. Shown above are viral titers in the lungs and brains of both animals. Both animals had replicating virus in the brain, while only one animal had detectable virus in the lungs.