tN LE eT RCTNE =
3.4
RADIOASSAY OF TISSUE SPECIMENS
Data presented in Table 3.3 show the levels of bela-gammaactivity found in ashed samples
of gastrointestinal tract and caecum from animals exposed at the T- and 106-mile stations.
Counts were made at different time intervals, but values given have been corrected for decay
and self-absorption and have been extrapolated to H+72 hr, when the animals were sacrificed,
Where no values are recorded, the levels were too low to read. IC is apparent that a high percentage of animals from the 7-mile stations showed definite, although low, levels of radioactivity in their gastrointestinal tracts, whereas the animals from the 106-mile-stations had
lower levels with negative results in more than half of the samples.
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