response to Paul Frame's message of Aug. 23

[Bernard L Cohen <blc+@pitt.edu>]

	"Adaptive response" experiments are all done with conditioning 
doses in the range 0-10 rad, and the effect generally peaks below 10 rad. 
Stimulation of immune response experiments are also in the dose range 
below 10 rad, and large effects are seen at 2.5 rad. I don't know about 
the cell cycle timing studies, but the effect is widely believed to be 
applicable in this low dose range. The experimental evidence indicating 
that the time delay between exposure and tumor development is very 
abundant--- Otto Raabe gave a review of it at the recent Boston HPS 
meeting--- but I don't know how widely accepted it is. 
	My purpose in pointing out these things is to show that merely 
depending on theory to substantiate linear-no threshold, with or without 
DDREF, is not supportable. I thought that was what Paul was trying to do.