Figure 1.

The ultrastructural morphology of platelets can be assessed by either a whole mounted, air-dried technique that allows enumeration of platelet dense granules. (A) A normal platelet with 10 dense granules. Platelets may also be sectioned in epoxy embedded buffy coat to evaluate organelle morphology and alpha granule content such as the platelet depicted in (B) that has numerous alpha granules and aggregates of black granular glycogen. Blue Bars = 1 micron.