So the Wolf-Blooded Tell "A Wolf's Meat" includes this line:

Silver also blocks any regeneration just as it would to a werewolf.

That does not appear to actually be a thing though. Werewolves regenerate agg damage faster than mortals do. Is there meant to be a line somewhere about silver being left in a wound causing the wound not to heal? Because I've done a pretty thorough search and can't find any rule about silver doing that (although it seems like it should have that effect).