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. Author manuscript; available in PMC: 2015 Feb 1.
Published in final edited form as: Transfusion. 2014 Feb;54(2):496–498. doi: 10.1111/trf.12488

Figure. The rate of severe urticarial reactions to platelets in the Trial to Reduce Alloimmunization to Platelets decreases over time.

Figure

Platelet transfusion exposure was grouped into bins of 5 transfusions. The number of platelet transfusions in each bin is indicated above the graph. The asterisk indicates when the three likely anaphylactic reactions occurred: two occurred at transfusion 3, and one at transfusion 4.