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Procosed Studies at Cperation Enothole
Survivals to Supplement G ¢. Data
Request survivals to supplement the 0. G. data.
This requires
no special set-up. It is a request of the surplus animals (day survival) to supplement the studies of the 9.G. survivals.
A.
The threshold cataractogenic dose was not obtained at 0. G.
since all animals received developed cataracts.
Theretore,
low dose survivals are wanted in both neutron and gamm
series.
‘ Be
The neutron survivors of 0. G. received did not cover the
LDcgq range but were very much lower. Therefore, survivals
in the LDco range are needed for comparative studies on
neopiasia induction in the neutron anc gamma exposed animals.
C.
D.
The number of animals surviving doses larger than LDcg were
few in the 0. G. series. This is an exceedingly interesting
frroup o< vhich more are wanted. Such a group has never been
stucled before.
Surplus animals can also be used for studiss on the pathogenesis
of lesions in the 0. G. serics, now evident. Some of these
hitherto not noted require confirmation.
Jacob Furth
Pathology and Physiology
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