Table 1. Survival times of macaques inoculated intracerebrally with brain homogenates from cattle with BASE or BSE, and from humans with vCJD.

Strain	Source	Dose*	Survival time (months)
BASE	cattle	25 mg	26
BSE	cattle	100 mg	40
BSE	cattle	100 mg	40
vCJD	human	40 mg	25
vCJD	human	40 mg	30
vCJD	human	40 mg	32
vCJD	human	40 mg	37

^*Amount of crude brain in 10% brain suspension inoculated intracerebrally. BSE brain had a 10-fold greater concentration of PrPres than the BASE brain). Animals inoculated with vCJD also received the equivalent of 8 mg of brain by intra-tonsillar injection.