Figure 5.

Correlation between early proliferative response at day 6 of slow growing clones derived from single-sorted CD34⁺CD38⁻ fetal liver cells and maximum CD34⁺38⁻ expansion potential of different clones. The maximum expansion potential was determined by repeated subculture of CD34⁺CD38⁻ cells sorted from confluent 1-ml cultures initially seeded with the content of a single well. *Estimated cell numbers: amount of CD34⁺38⁻ was not determined due to low cell numbers; expansion was calculated on total cells for these clones.