Thanks Mandi. I was trying to point out that just because we do not know the
exact mechanism of how a particular agent causes disease does not invalidate
the overwhelming evidence about the cause. I was using cancer as an analogy,
not referring to viral causes of cancer. Sorry if that was not clear.


On 4/4/07, Mandi Smallhorne <[log in to unmask]> wrote:
> I may be wrong, but I think that when Michael spoke of cancer and cell
> proliferation, he was not talking of a virus as cause, but of the fact
> that
> tumours are due to the unchecked proliferation of cells. In fact I thought
> it fairly clear from his post that he specifically did not point to a
> viral
> cause? While viruses have been postulated and investigated as cause for
> some
> cancers, surely anyone with half an ear to the medical journals and
> scientific press knows that cancer is triggered by any number of agents,
> from tobacco smoke to industrial pollutants to viruses.
> Mandi
> ----


Michael Balter
Contributing Correspondent, Science
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