Re: LNT - a semantic comment

["Bjorn Cedervall" <bcradsafers@HOTMAIL.COM>]

>I think a zero slope would not make sense-this is equivalent to no rate of

change with dose, which means independence. It would of course apply in the

region below a threshhold-if there was one-then a linear approximation would 

be

the first approximation for small enough doses above the threshhold.

----



Wouldn't one (in practice completely unlikely) possibility be that two 

(biological) factors exactly cancel out in the limit? Since this (zero 

slope) seems like an impossibility a negative slope seems more likely than a 

zero one if they were alternatives.



My personal reflection only,



Bjorn Cedervall             bcradsfers@hotmail.com





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