Fig. 4.
The percentage of F cells in unfractionated, ND uncycled, and ID and HD cells formed after 22 hours of O-D cycling at pH 6.8. SS ND cells derived from SS whole blood (WB) were O-D cycled for 22 hours at pH 6.8, and the newly formed dense cells were separated into ID and HD cells using continuous density gradients, as in Fig 1. Results are shown for four SS patients.