Five Cats writes
In article , Oz
writes
Five Cats writes

And penicillin kills guinea pigs....

Indeed it does. Stone dead.

If discovered today it would have been rejected on first screening,
never to be seen again.

Except that mice & rats are used a great deal more than GPs for testing.....

The guinea pig is one of the standard mammals.

Still I guess it might kill those as well.

No, it doesn't kill rats and mice.

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Oz
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