Table 1.

CFU-MK colony formation by human CD34+ cells in serum-free, semisolid methylcellulose medium

SDF-1
100 ng/mL
TPO
25 ng/mL
SDF-1 + TPO
100 ng/mL + 25 ng/mL
CFU-MK 0 ± 0 87 ± 26 89 ± 31 
SDF-1
100 ng/mL
TPO
25 ng/mL
SDF-1 + TPO
100 ng/mL + 25 ng/mL
CFU-MK 0 ± 0 87 ± 26 89 ± 31 

Each data entry constitutes 3 independent clonogenic assays from 3 different donors. Data shown are mean ± 1 SD.

CFU-MK indicates colony-forming units–megakaryocyte.