Ballem P J, Buskard N A, Decary F, Doubroff P
Br J Haematol. 1987 May;66(1):113-4. doi: 10.1111/j.1365-2141.1987.tb06899.x.
A patient developed severe post-transfusion purpura (PTP) following transfusion of two units of packed red blood cells. The timing of the patient's thrombocytopenia suggested passive immunization rather than the typical anamnestic response associated with classical PTP. Investigation of the blood donors revealed one with evidence of a platelet specific antibody of high titre. This donor was typed as P1A1 negative and the antibody was shown to have anti-P1A1 specificity.
一名患者在输注两单位浓缩红细胞后发生了严重的输血后紫癜（PTP）。患者血小板减少的时间提示为被动免疫，而非与经典PTP相关的典型回忆反应。对献血者的调查发现其中一人有高滴度血小板特异性抗体的证据。该献血者血型为P1A1阴性，且抗体显示具有抗P1A1特异性。
