99
50 per cent incident level of these opacities was at 50 r
at the half year.
at a year,

This continues to go down in total dose

a year and a half and two years,
DR. DUNHAM:

It was my understanding that the

macaques at Austin, Texas, have failed to show any opacities,

many of whom must have gotten more than 100 r a year after I
heard about

it.

MR.

HARRIS:

I talked to the monkey man, and they

are now getting opacities that were exposed to 14 NEV neutrong.

Alderson Reporting Company
Washington, D. C.

10

DR

BOND:

Isn't the threshold for cataracts in mic Pp

11

usually lower than for other animals?

12

data be the Japanese data?

18

MR. HARRIS:

Wouldn't more suitable

-

This is a definitive cataratt you

14

are talking about.

15

detectable opacity.

16

disturbing situation in mice, which is really to squeeze the

17

mouse behind the neck and his eyes pop out,

18

Sideways, and you can see it.

19

disturbing situation, and the threshold there is similar to

20

that found in Japan, or the incidence level is similar to wha

21

has been found.

What I am talking about is a smallest

When you take mice, then for a true visi Do

and he looks

This is certainly a vision

It was stated about 500 REM equivalent

and it runs that wey for mature cataratts in mice.
23

DR. DUNHAM:

ARC

These are presumably going to be

gamma ray cataracts, if due to anything,

=

MR. HARRIS:

¥ will have x-ray cataracts and gamma

‘

/0

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