week. No bleeding associated with the platelet depression was noted and blood

3 of the Rongelap
ind had diarrhea.
a few complained
‘emained asympto-

Nh

Be

fap]

~

©
|

LEUKOCYTES AND NEUTROPHILS «107?

rey carried out at
yout 100 exposed
> were examined,
ments made conature. The survey
nstitutions in the
Laboratory. The
examinations, and
burdens are being
' Rongelap indivinpies.

transfusions were not necessary. Erythrocytes as measured by hematocrit levels
were not significantly depressed.

ou
Oo. .8

bd
24
40
56
72
DAYS

6

MO

|

2

3

4

5

YEARS

TIME AFTER EXPOSURE

Fig. 2: Mean neutrophil and white blood counts of exposed Rongelap people from time
of exposure through five years post-exposure. Stars represent mean values of comparison
populations

neous lesions and

10-—

ToT

TT

1. It was apparent

‘xposure, that the

9 §F

doses of radiation
be sublethal since
idiation exposure.
thal range judging
n addition radioints of radioactive

o

a

woet
Li
-

re

34

7

L

=

a

=

>
4

heral blood levels
receiving approxi-

2
oO

|

Oo

; 2, 3 and 4. The

3 about half those
‘o months but no
ncreased incidence
erwise} was given
were also signifiels by the fourth

|

b—

«

Fig.

3:

8

i

1

24

j

l

}

40

DAYS

L

56

i

72

6

MO

|

TIME AFTER EXPOSURE

{

LL.

L

2

3

4

YEARS

~25

Mean lymphocyte counts of exposed people from time of exposure through five

years post-exposure. Stars represent mean values of comparison populations

Following this early depression, the blood elements slowly recovered, some

elements faster than others. The neutrophils were first to reach comparison
population levels by about one year post-exposure (Fig. 2). The lymphocytes

317

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