3 ms·
> strong barriers (stomach acid, small intestine) Just read this fun little page, and you'll re-think your stance on "strong barriers": http://en.wikipedia.or
by Florin_Andrei 13y ago
> strong barriers (stomach acid, small intestine)
Just read this fun little page, and you'll re-think your stance on "strong barriers":
http://en.wikipedia.org/wiki/Dysentery http://en.wikipedia.org/wiki/Dysentery