Table 1.

TdT+ Precursors in BM and Their Marker Coexpression Patterns

Proband (age) % TdT+ (of MNC) % of TdT+ Cells Positive With Marker
CD34 CD10 CD19 CD79a
1. 2 mo 4.2 8287 66 91
2. 1 yr 10 mo 2.7 90 79 4965
3. 2 yr 7 mo 3.9 93 95 74 89
4. 3 yr 7 mo 2.9 90 92 84 92
5. 3 yr 10 mo 1.980 96 92 93
6. 4 yr 1 mo 13.6 90 9175 93
7. 8 yr 11 mo 0.7 ND 85 48 81
8. 12 yr 4 mo 0.6 ND 66 60 70
9. 12 yr 11 mo 1.9 75 89 60 80
  • Values were derived from gating experiments as described in Materials and Methods.

  • Abbreviation: ND, not determined.