Table 1. Neutrophil-related parameters for rhesus macaques following x-irradiation.

Animals were exposed to 250 kVp x-radiation at 6.00 Gy total body irradiation. The mean, standard error (SEM), median and range for neutrophil-related parameters are reported. The day of the occurrence of neutropenia [absolute neutrophil count (ANC) < 500 cells μL^-1 or < 100 cells μL^-1, respectively] is shown. The duration of neutropenia was estimated as the number of days that a subject had an observed or extrapolated ANC < 500 cells μL^-1 or < 100 cells μL^-1. Any single observed ANC that was ≥ 500 cells μL^-1 and was immediately preceded and followed by ANC < 500 cells μL^-1 was counted as a day of neutropenia. The time to recovery was determined as the number of days from study day 1 until the first 2 consecutive days observed or extrapolated to an ANC ≥ 500 cells μL^-1 or 1,000 cells μL^-1 after the nadir.

	First day (d) of Neutropenia (cells μL-1)		Duration (d) of Neutropenia (cells μL-1)		Day of Recovery a ANC (cells μL-1) (day)		Nadir a (cells μL-1)
	ANC<500a	ANC<100b	ANC<500a	ANC<100b	ANC≥500	ANC≥1,000	ANC
Mean ± SEM	5.5 ± 0.2	10.5 ± 0.8	15.1 ± 0.6	6.3 ± 1.2	20.9 ± 0.6	22.6 ± 0.7	51 ± 17
Median	6.0	11.0	15.0	6.5	21.5	23.0	31
Range	d4 - 7	d6 - 18	d12 - 20	d0 - 15	d18 - 25	d19 - 28	0 - 210

^an = 14

^bn = 12