Distribution of female blood recipients.

Patients were randomized to receive either leukoreduced or nonleukoreduced red blood cells. ▪, number of subjects who received blood transfusions from one or more male donors, with evaluable posttransfusion blood samples; ■, number of subjects who received blood from only female donors, did not have posttransfusion blood samples for study, or did not undergo a T2 transfusion.