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Effect of transferrin absence on in vitro globin chain synthesis in reticulocytes of beta-thalassemic patients.

The effect of transferrin absence on in vitro globin chain synthesis and on the alpha/beta ratio were investigated in four patients with beta-thalassemia intermedia and one heterozygote with "silent" beta-thalassemia. With one exception the lack of transferrin in the incubation medium resulted in the reduction of the globin alpha/beta ratio which paralleled a reduction in overall protein synthesis. In one patient with beta-thalassemia intermedia, however, the absence of transferrin failed to affect this ratio.