This is one of the reasons that, despite no direct evidence of harm, I will only ever take marine collagen instead of bovine collagen.
Do not fuck with the possibility of ingesting cow nervous system tissue, let alone human.
Do not fuck with the possibility of ingesting cow nervous system tissue, let alone human.
But, somehow, it hasn’t into humans yet.
Non-mammal prions have a different enough shape to avoid breaking mammalian biomechanisms.