55
a1
!
T
T
1
T
T
es
50 ;
35
7
45 +
4
40 +
4
Lymphocytes. The meanlevel of the lymphocyte counts (Table 21 and Figure 35) in 1959
. showeda slight increase over the 1958 values. The
mean levels were about the same in the exposed
and unexposed populations. A scattergram (Figure
36) of the age distribution of the lymphocyte
counts in the exposed group for the first time
showed about an equaldistribution in the exposed
population of counts above and below the mean
levels of the unexposed people. The cumulative
percentage distribution curves of the exposed and
vt
F
°
« 397
® UNEXPOSED
2
w 30-6
4
li
e
eI
4
¢
z2st
20 |-
*e
le
.
IS
Io
+.
+
e
1
0
O
l
20
1
3
40
AGE (YR)
L
50
l
60
l
70
unexposed (Figure 37) showed close approxima-
tion. The 1960 absolute lymphocyte countsalso
showed a decrease corresponding to the WBCdecrease, the mean dropping from 4000 in 1959 to
2700 in 1960.
80
Figure 39. Individual platelet counts of exposed males
plotted against age, 1959. Solid line represents meanlevel
of comparison male population.
PLATELETS x1074
55
T
{
50 -
_
45
s
35
Eosinophils and Monocytes.
Eosinophil and
monocyte counts showeda slight increase in 1959
over the 1958 levels and wereslightly greaterin
the exposed population. As noted in 1958, a large
percentage of the population had eosinophil
counts >5% of the total white count(1959, 44% of
exposed population and 39% of unexposed; 1960,
46% of exposed, no data on unexposed). Thelevels
of eosinophils and monocytes in 1960 were not
very different from the 1959 levels. (Basophils are
discussed below in connection with leukemia.)
e
Platelets. Meanplatelet counts in 1959 (Table
21 and Figure 38) wereslightly lower than in 1958
in both the exposed and unexposed populations.
The meandeficit in platelets in the exposed population was about the sameaslast year (— 9.3% for
the males and — 11.3% for the females). Age distribution scattergramsfor the individual platelet
UNEXPOSED
30; of
255
counts in both males and females of the exposed
10
Qo
|
!
!
i
!
!
!
{0
20
30
40
50
60
70
AGE
population showed more counts below than above
the unexposed mean curve(Figures 39 and 40).
This was also borne out by comparison of the
80
(YR}
cumulative percentage distribution curves for the
Figure 40. Individual platelet counts of exposed females
plotted against age, 1959. Solid line represents meanlevel
of comparison female population.
exposed and unexposed populations: the latter
showed continued displacementto theleft (Figure
41). The significance of the continued platelet depression in the exposed population is also indicated bythe finding of levels < 250,000 in 37% of
the exposed group but in only 24% of the unexposed.
100 |-
80+
“
60h
4
40b
L
+
sidered reliable for the 1959 survey. Samples containing ethylenediaminetetraacetic acid as an
anticoagulant appeared to have a lower hematocrit than untreated venousorfinger stick blood.
© 5 YRS POST EXPOSURE
4 COMPARISON POPLLATION|
4
20+
ol
Erythropoetic Function.
Because of technical
difficulties, the hematocrit levels were not con-
f
5
13
[oof
2I
|
29..—=O«7
45
PLATELETS x107 4
|
53
6GI
Figure 41. Cumulative distribution curve,
Rongelapplatelets, 1959.
69
~
CUMULATIVE PERCENT
COUNTS
(DAYS 26-30)