For the conditions described here, the fraction of radon released to the blood stream due to diffusion through the stomach wall is 20%.
The absorbed dose to the cells at a depth, r, is related to the time-integrated radon concentration at this same depth. The integrated concentration, relative to that in the lumen is
For conditions described here, the time-integrated concentration at the location of the stem cells (depth = 200 µm) was approximately 30% of the integrated concentration in the lumen. As seen from figure B.3, the time-integrated concentration