Abstract

β-THALASSAEMIA is a hereditary anaemia in which the β-chains of haemoglobin, though structurally normal, are synthesized abnormally slowly. The β-thalassaemia of the Ferrara region of Italy is distinguished in the homozygote by β-chain synthesis which is not merely reduced but completely absent. It has recently been reported that, in a cell-free system, ribosomes from such subjects do not make β-chains in the presence of their own supernatant but do when nonthalassaemic supernatant is substituted1. It was shown that this effect was due to a factor other than mRNA.

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