Table 1.

Series I (n = 14): preparation data

	Original bag	After addition of RB before illumination	Day 1	Day 3	Day 5	Day 8
Platelet yield, × 1011
T-PC	5.8 ± 0.7	2.8 ± 0.3*	2.4 ± 0.3*	2.3 ± 0.2*	2.2 ± 0.3*	2.1 ± 0.3*
C-PC	5.8 ± 0.7	2.9 ± 0.2	2.7 ± 0.2	2.5 ± 0.2	2.4 ± 0.2	2.4 ± 0.2
Platelet content, × 103/μl
T-PC	1,277 ± 159	1,099 ± 119*	1,048 ± 117*	1,064 ± 108*	1,101 ± 124	1,125 ± 143
C-PC	1,277 ± 159	1,147 ± 70	1,148 ± 89	1,133 ± 68	1,153 ± 93	1,201 ± 107
pH, 22 °C
T-PC	7.4 ± 0.1	7.4 ± 0.1*	7.3 ± 0.1*	7.1 ± 0.1*	6.8 ± 0.2*	6.3 ± 0.0*
C-PC	7.4 ± 0.1	7.2 ± 0.3	7.4 ± 0.0	7.4 ± 0.1	7.4 ± 0.1	7.2 ± 0.2

^*p < 0.05; T-PC (PRT-treated unit) versus C-PC (untreated control unit).