SynopsisNew bismaleimides containing ether bonds were prepared. The thermal properties of the bismaleimides were investigated by differential scanning calorimetry (DSC). The effects of structure of the bismaleimides and curing conditions on the thermal and mechanical properties of the cured resins such as initial decomposition temperature (Td), glass transition temperature (T'), and flexural strength were studied. The introduction of ether bonds to bismaleimide resins decreased the brittleness of the resins without reductions in their heat-resistant properties.

A 54-year-old woman developed transfusion-associated graft-versus-host disease (TA-GVHD) after the transfusion of stored packed red cells obtained from unrelated donors. The patient was presumed to be immunocompetent. A diagnosis of TA-GVHD was made by clinical features and postmortem pathologic findings. Sex chromatin analysis of the patient's lymphocytes demonstrated chimerism. HLA typing of the blood donors revealed one to be HLA-homozygous for one of the patient's HLA haplotypes (A33-B44-Cblank). This case illustrates the risk in the general patient population of TA-GVHD after routine blood transfusion therapy. Workers should be aware of this possibility and should continue searching for an efficient way to prevent it.

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