Scott Wood wrote on 1/10/02 9:13 AM :

>I grew up around poison oak and have a surprisingly high tolerance for 
>it.  Guess I am lucky in that regard.  Even with that, we will be taking 
>things very carefully while out there.  You are right about it when the 
>leaves fall though.

It doesn't work that way!

Everyone is born with some degree of tolerance, or immunity to these 
chemical "reactions."  With repeated exposure, this tolerance will 
decrease, until the body develops a defensive reaction - which results in 
the rash, etc.  Some people only need one exposure to get the body to 
react.  Others require many, but it's not infinite.

-Jim

* Please notice that I have changed my e-mail address to:
  JimStamm@Mac.com