Table 5. Enhancement ratios^a owing to combination with a ¹⁰B-carrier.

10B-carrier	Total cell population	Quiescent cells
Surviving fraction=0.08
BPA	1.95 (1.75–2.15)b	–
BSH	1.3 (1.2–1.4)	–
Net micronucleus frequency=0.2
BPA	2.0 (1.8–2.2)	1.7 (1.6–1.8)
BSH	1.3 (1.2–1.4)	1.8 (1.65–1.95)
Net apoptosis frequency=0.06
In whole cell fraction
BPA	1.5 (1.4–1.6)	1.25 (1.15–1.35)
BSH	1.4 (1.3–1.5)	1.35 (1.2–1.5)
In pimonidazole-unlabelled cell fraction
BPA	1.65 (1.5–1.8)	1.65 (1.5–1.8)
BSH	1.5 (1.4–1.6)	1.7 (1.6–1.8)

BPA, boronophenylalanine-¹⁰B; BSH, sodium mercaptoundecahydrododecaborate-¹⁰B.

^aThe ratio of the dose of radiation necessary to obtain each end point without a ¹⁰B-carrier to that needed to obtain each end point with a ¹⁰B-carrier.

^bValues in parentheses are 95% confidence limits, determined using standard errors. When the ranges of 95% confidence limits showed no overlap between two values, the difference between the two values were significant (p<0.05) based on a χ² test.