the relative proportions of spectrin tetramer and dimer forms extrated from red cell membranes in a low ionic strength buffer at 4 degrees c were determined for 15 normal subjects , 27 subjects with alpha-thalassemia ( 7 alpha-thalassemia trait , 9 hb h disease ( alpha-thal 1/alpha-thal 2 ) and 11 hb h with hb constant spring ( cs ) , 23 subjects with beta-thalassemia ( 6 beta-thalassemia trait , 5 homozygous beta-thalassemia , 11 beta ( 0 ) -thalassemia with hb e and 1 beta ( + ) -thalassemia with hb e ) , 6 subjects with hb e ( 2 homozygous and 4 carriers ) and 1 subject with combined alpha-thal 1/hb cs and hb e ( ae bart 's disease ) .
C0002312
alpha-thalassemia
C0039730
thalassemia