Metal "whiskers" on cartridge body

I checked my stylus/cartridge yesterday, the stylus looked great. However, I noticed metal "whiskers" attached to the front of the cartridge body (an ESCCO modified Zu Denon 103R).

I have no idea where these came from, the cartridge is always stored in a clean wooden box, by itself, when not in use.

Is a there a safe way to remove them? They don't seem inclined to go anywhere, but I'd rather they not be there.

I welcome your thoughts.

Regards,
Dan