Pat Cabe wrote:

>  Somehow one needs to find out at least at what doses those
> chemicals might be fatal (the LD50, the Dose which is Lethal for of 50% of test
> animals within 24 hours, is a typical measure). Like it or not, dosing lab
> animals with chemicals is the way this is done. And because different species
> metabolize chemicals in different ways, there is a need to test multiple
> species, perhaps including cats.

It doesn't need to be a like it or not, either/or problem with the LD50 test.  The
test isn't always necessary to determine toxicity (although it might be with
substances like LSD or water).  A good discussion of alternatives can be found at:

http://altweb.jhsph.edu/science/pubs/ECVAM/ecvam16.htm

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* Mike Scoles                      *    [EMAIL PROTECTED]        *
* Department of Psychology         *    voice: (501) 450-5418        *
* University of Central Arkansas   *    fax:   (501) 450-5424        *
* Conway, AR    72035-0001         *                                 *
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