hemoglobin S (Hb S) polymerization, which in turn is dependent on the intracellular
concentration of Hb S. We have recently defined a region of DNA approximately 500 bp 5′
to the human beta-globin gene that acts as a silencer for the transcription of this gene and
have shown that a polymorphism in this sequence is associated with a thalassemic
phenotype of the beta-globin gene. In this work we have examined the correlation of DNA …