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Re: T rex bites your bum

>  _T. rex_ saliva may have 
> been
> more lethal to other _T. rexes_ than it was to _T. rex's_ prey.
> One of the many ideas in paleontology that can't be tested.

Hmmm, maybe it can be tested.  Some _T. rex_ bones show evidence of
chronic infected and draining puncture wounds, which were presumably
inflicted by another _T. rex_. (there are no other perpetrators that are
large enough to be candidates).

If an infection that was caused by a bite becomes chronic, then that may
be a clue that _T. rex_ lacked strong immunity against it's own oral