FIG. 8.

Scatter properties and surface marker expression of unactivated, culture-derived platelets. All samples were analyzed using the same forward scatter (FSC) and side scatter (SSC) voltage settings on the flow cytometer. Platelet-sized particles were identified with an SSC versus FSC gate drawn on fresh and recently expired platelets. CD41 and CD42b expression was analyzed for particles in this characteristic size range. An isotype control was used to determine positive events for each sample (not shown) Pre PLTs, preplatelets; Pro PLTs, proplatelets. Color images available online at www.liebertpub.com/tea