Fig. 5. Long-term HPP-CFC assay. HPP-CFCs were taken from MethoCult M3434 cultures
every 20 days. 104 cells from pooled colonies were replated at each
passage. HPP-CFCs were scored after a total 60 days in culture. Results are
expressed as the mean of three independent observations performed in
quadruplicate. This graph was established using E15 organs; similar results
were yielded by E12 and E17 organs. FL, fetal liver; Pl, placenta; YS, yolk
sac.