Table 2

Functional analyses of sorted CD34+ sub-fractions in LTC-IC assays

LTC-IC frequencynCD34′, %CD133+, %CD133low/−, %P CD133+ to CD133low/−P CD133+ to CD34+
CD38 4.2 ± 3.5 CD38low, 13.4 ± 1.8 CD38+, 0.3 ± 0.4 < .01 < .02 
CD53 3.4 ± 2.7 CD53+, 7.9 ± 4.2 CD53low/−, 1.1 ± 1.0 < .03 < .03 
CD62L 3.4 ± 2.7 CD62L+, 8.9 ± 3.9 CD62Llow/−, 0.3 ± 0.1 < .01 < .01 
CD63 5.3 ± 2.8 CD63low/−, 11.4 ± 3.0 CD63+, 0.3 ± 0.2 < .01 < .01 
CD71 3.4 ± 2.7 CD71low, 12.7 ± 10.0 CD71+, 1.0 ± 0.8 < .06 < .05 
LTC-IC frequencynCD34′, %CD133+, %CD133low/−, %P CD133+ to CD133low/−P CD133+ to CD34+
CD38 4.2 ± 3.5 CD38low, 13.4 ± 1.8 CD38+, 0.3 ± 0.4 < .01 < .02 
CD53 3.4 ± 2.7 CD53+, 7.9 ± 4.2 CD53low/−, 1.1 ± 1.0 < .03 < .03 
CD62L 3.4 ± 2.7 CD62L+, 8.9 ± 3.9 CD62Llow/−, 0.3 ± 0.1 < .01 < .01 
CD63 5.3 ± 2.8 CD63low/−, 11.4 ± 3.0 CD63+, 0.3 ± 0.2 < .01 < .01 
CD71 3.4 ± 2.7 CD71low, 12.7 ± 10.0 CD71+, 1.0 ± 0.8 < .06 < .05 

n indicates number of experiments; CD34+, LTC-IC frequency of CD34+ cells purified at culture day 3 (note: identical CB- samples for CD53, CD62L, and CD71 analyses were used); CD133+, LTC-IC frequency of purified, cultured CD34+ CD133+ cell fractions which are CD38low, CD53+, CD62L+, CD63low/−, or CD71low, respectively; CD133low, LTC-IC frequency of purified, cultured CD34+ CD133low/− cell fractions which are CD38+, CD53low/−, CD62Llow/−, CD63+, or CD71+, respectively; P CD133+ to CD133low/−, P values of significance analyses of the LTC-IC frequency of CD34+CD133+ cell fractions compared with that of corresponding CD34+CD133low/− cell fractions; P CD133+ to CD34+, P values of significance analyses of the LTC-IC frequency of CD34+CD133+ cell fractions compared with that of corresponding CD34+ cell fractions.