for different radiations.
He has demonstrated
excellent families of curves which show,
for
examrle, a decrease in thymic weight of 35 and
10 ver cent respectively for the sane doses of
250 and 1000 k.v. x-rays.
The spleens are
weighed immedietely after autopsy of the animals,
but the thymus is placed in formalin over nizht
to permit easier separation of the fat.
1300
sevarate weighings will be done in paired
weighing bottles for each test.
élances,
He has five
28 regular staff of seven and will add
seven other helpers to his group after each test.
A trial run using 250 k.v. x-rays will be conducted
on Japtan on the generation of mice voreceding those
actue!ly used in the first test.
Mouse Experiments (other than dosimetry)
The Fy hybrids of
the LAF strain are being used because they zive the nost
consistent data on mortality studies according to Cronkite
and Lorenz.
1.
Mortality vs.
for gan ™a
distence:
rays.
This will only be determined
There will be thirty animals of
eech sex in the twenty-nine cylindrical stations,
which sre so placed that they will receive increasing
doses of genna reys
in increments of °5 roentgens.
“he probable dose renge which will be covered is
40-1200, but it may be 50-1400, or 80-1600 r.,
denending unon the bomb efficiency.
I don't
think these animals will be autopsied.
Should be recovered in 4-5 hours.
They
Lethe] dose
studies under simulated field conditions have
been comnleted at Eunter's Foins.
DO’ ARCHIVES