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. Author manuscript; available in PMC: 2007 May 3.

Published in final edited form as: Int J Radiat Oncol Biol Phys. 2007 Mar 15;67(4):1179–1186. doi: 10.1016/j.ijrobp.2006.11.037

Table 1.

Oxygen tension in R3327-AT1 Dunning prostate tumors for rats breathing air or oxygen

	Baseline (air)				Oxygen Inhalation
		pO₂ (torr)			pO₂ (torr)
Tumor Size	No.	Mean +/− SE	Median	Mean HF₁₀ (%)	Mean +/− SE	Median	Mean HF₁₀ (%)
Small (< 1.5 cm³)	5	25.2 +/− 0.8	21.9	19.2 +/− 4.0
Large (> 3.0 cm³)	5	1.8 +/− 0.6^*	<9 ^ª	77.8 +/− 8.5^*
Oxygen challenged
Small (< 1.5 cm³: Group 5-O₂)	3^{^}	28.5 +/− 1.0	24.1	12.8 +/− 3.7	79.6 +/− 2.1^‡	74.4	1.4 +/− 0.9^#
Large (> 3.0 cm³: Group 4-O₂)	3^{^}	−0.4 +/− 0.7^*	<6 ^ª	91.0 +/− 1.3^*	4.9 +/− 1.6^*	<7 ^ª	84.8 +/− 3.0^*

^*

p< 0.001 from small;

^‡

p< 0.001 from baseline;

^#

p< 0.01 from baseline

^{^}

a subset of the tumors above

^ª

p> 0.95