Can you get bse from bovine collagen supplements?

Not likely: I think there is probably no brain or nerve tissue in this. Also I think there has been no mad cow disease in USA in recent years. However, the epidemic among British milk cows was traced to bone meal and meat added to their feed. Prions tend to survive heating. Since the US govt does not regulate these supplements you cannot know exactly how it was made. Why take this useless supplement, anyway?