Table 1. Percentage change in ZSSJ and RTS34st cell numbers 2 weeks after different doses of gamma-irradiation.

Irradiation	ZSSJ at 26 °C	RTS34st at rt	RTS34st at 26 °C
none	+ 1083.81 ± 69.78	+ 1377.69 ± 43.88	- 30.44 ± 8.21
0.5 Gy	+ 1126.38 ± 131.46	+ 1392.79 ± 28.70	- 31.18 ± 5.80
10 Gy	+ 675.34 ± 19.91	+ 565.87 ± 22.12	- 63.03 ± 2.42
20 Gy	+ 40.72 ± 4.40	- 21.28 ± 5.59	-
30 Gy	- 48.07 ± 6.76	- 54.71 ± 2.59	- 72.99 ± 2.83
40 Gy	- 66.54 ± 1.74	- 59.58 ± 4.80	-
50 Gy	- 71.11 ± 5.31	- 70.89 ± 1.77	- 71.29 ± 1.26

RTS34st and ZSSJ cells were irradiated in 25 cm2 tissue culture flasks and reseeded into 12-well tissue culture plates at 5.0 × 10⁴ cells per well and incubated at either room temperature (rt) or 26 °C. At 24 h (day 0) and 2 weeks after plating, a Coulter particle counter was used to determine cell number in triplicate wells for each treatment. The counts at 2 weeks were expressed as a percentage of the day 0 count.