Fig. 2.
Separation of the lipid priming activity by phospholipid class from the plasma of day-5 control platelets and day-5 implicated platelets.
Lipids were extracted and separated by means of a normal-phase HPLC system. The resulting 4-minute fractions were resolubilized in 1.25% albumin and tested for their ability to prime the fMLP-activated respiratory burst in PMNs from healthy donors compared with albumin-treated controls. One peak of activity was found at the retention time of lyso-PCs in both the control and implicated WB-PLT units. The figure is representative of 6 control and 6 implicated WB-PLT units, which underwent identical analysis.