>No. Apthus ulcers have nothing to do with a virus. Cold sores are what you
>are thinking of.

No.  I'm thinking of apthus ulcers.  The overwhelming opinion is that they
are related to viruses, which explains the immune response listed in your
very definitive journal.

I looked up mouth ulcers in my Merck Manual (16th
>edition). It says "Etiology is unknown, but several factors point toward a
>localized immune reaction. Deficiencies of iron, vitamin B12 and folic acid
>increase susceptibility. Stress and local trauma are usually the
>predominant precipitating factors."
>
>I also have numerous articles connecting canker sores (same as apthus
>ulcers) with gluten consumption, even in people that are not celiac.

obviously this can't be true since your Merck Manual didn't present it.
>