Table 1. Relative tumor growth with respect to treatment.

	Relative tumor volume (RTV)
Group	Day 3	Day 7	Day 14
Control	2.33 ± 0.55	2.84 ± 0.81
CA4P	1.11 ± 0.14a	3.33 ± 0.45
Radiation (IR)	1.28 ± 0.12a	2.00 ± 0.23	2.83 ± 0.88
IR + O2	1.04 ± 0.14a	1.80 ± 0.35a	3.49 ± 0.87
CA4P + 24h IR	1.01 ± 0.11a	1.79 ± 0.29a	2.89 ± 0.45
IR + 1h CA4P	1.46 ± 0.22a	2.10 ± 0.23	2.14 ± 0.35
(IR + O2) + 1h CA4P	1.02 ± 0.11a	1.20 ± 0.08a,b	2.35 ± 0.42
CA4P + 24h (IR + O2)	0.96 ± 0.05a,b	0.60 ± 0.20a,b	1.51 ± 0.25c

^ap < 0.05 from control;

^bp < 0.05 from IR group;

^cp < 0.05 from any of the other treatment groups (Student's t-test).

The animals in Control and CA4P alone were sacrificed on Day 7. CA4P was administered as a single dose of 30 mg/kg. IR was delievered as a single dose 5 Gy.