D. D. JOEL AND E. P. CRONKITE 
889 
lO 
in 
\- 
>■ 
o 
o 
X 
CL 
10 
9 
8 
7 
6 
5 
4 
3 
2 
I 
0 
T — I I I 
I I r 
I I I — r~r^N I I I 
o 
UJ 
CO 
o 
a. 
X 
CONTINUOUS ECI 
900 rod 
-450-200 rod 
100 rod 
30 rod 
15 rod 
TRANSIT DOSE 
TRANSIT DOSE 
TRANSIT DOSE 
TRANSIT DOSE 
TRANSIT DOSE 
- i 
J I I L 
64 72 96 144 192 
32 40 48 
HOURS 
DAILY REPETITIVt ECI 50 rods TRANSIT DOSE 
10,000 
„ 5000 
LJ 
_) 
< 
CO 
o 
o 
n — I — I — \ — \ — \ \ I — \ — r 
HOURS OF Co^° EXPOSURE 
4 4 4 4 4 4 2 
bJ 
I- 
>- 
O 
O 
X 
CL 
1000 
500 
100 
"1 I — I — I — I — I — I — \ — I — I 
AVERAGE OF 2 CALVES 
• TOTAL LYMPHOCYTES 
A SMALL LYMPHOCYTES 
o LARGER LYMPHOCYTES 
B 
J L 
I I I I I I 
J I I L 
_L 
8 
14 
16 
18 20 
22 
10 12 
DAYS 
Figure 2. — a. Total blood lymphocyte count as a function of transit dose and time after commence- 
ment of ECIB. 900 rads represents 10 calves: 450-200 rads represent 10 calves; 100 rads repre- 
sents 2 calves; 30 rads represents 3 calves; 15 rads represents 5 calves. (Reprinted from Sipe 
et al., 1965.) b. The influence of repetitive daily ECIB on the blood lymphocyte counts plotted 
on semilog paper. (Reprinted from Sipe et al., 1965.) 
