J jen Guest Mar 27, 2009 #1 Why is there a halo around the disk in the Ames test around Asbestos or 5-bromouracil? Both tested positive as carcinogens. Why are there no colonies growing on this part of the plate?
Why is there a halo around the disk in the Ames test around Asbestos or 5-bromouracil? Both tested positive as carcinogens. Why are there no colonies growing on this part of the plate?
