Most importantly, 294.1 and McKrae reactivation was detected in the brain stems earlier than in the trigeminal ganglia of mice treated with hyperthermia to reactivate latent virus in vivo.  In addition, the brain stem yielded reactivated virus at a high frequency compared with the trigeminal ganglion, especially in mice latently infected with 294.1 after hyperthermia treatment. 
THERM