The following tissues were taken:
for rats, skin, muscle,
bone, liver, stomach, gut, kidney, and lung (in post shot specimens); for birds,
skin,
muscle,
bone,
liver,
gizzard, gut, and lung (in some specimens).
proventriculus,
Special care was
taken in all dissections to prevent cross contamination between
organs.
The dissection instruments were washed and wiped after
each step, and the digestive tract with its contents dissected
out last to prevent general cross contamination by the more or
less fluid digestive tract contents.
Results.
The
specific activity of the organs and tissues
of the rats is given in Tables 16a and 16b.
In Tables 17a and
17b the disintegration rate for activity within the organs and
tissues of the birds is given.
Analysis of Organs and Tissues,
Pre-shot. The amount of
radioactivity found in the organs and tissues of rats and birds
in the pre-shot collections
is
small
(Tables 16a and 17a) with
a maximum of 47 d/m/g in the terns and 26 d/m/g in the rats.
However,
there are similarities
in the distribution of the
activity according to the different tissues and organs of the
rats and birds.
In Figure 11, a histogram of the average a/m/g
for the organs and tissues of all of the pre-shot birds and rats
is given.
Similarities in radioactivity levels for like organs
or tissues
in the birds and rats are apparent with gut, muscle,
liver,
skin, and stomach in both groups containing measurable
amounts of radioactivity.
In bone none was detected.
If the
‘ergans and tissues are arranged in descending orderof average
_
~ 65 -
aoe
eM
,