“…In this regard, it is noteworthy that Kohler et al (18) have shown differences in the amino acid composition and antigenicity of the cytoplasmic fragment of band 3 from ghosts of different individuals suggesting genetic polymorphism. The PAS-staining bands (glycoproteins) were also identical in the fetal and adult cells, supporting other studies (24) in which the electrophoretic mobility of fetal and adult red cells and also the concentration of N-acetylneuraminic acid were similar. Quantitative densitometry of the gels and calculations of the number of total polypeptides per ghost showed that fetal ghosts contain greater numbers of polypeptides than adult erythrocyte ghosts.…”
“…In this regard, it is noteworthy that Kohler et al (18) have shown differences in the amino acid composition and antigenicity of the cytoplasmic fragment of band 3 from ghosts of different individuals suggesting genetic polymorphism. The PAS-staining bands (glycoproteins) were also identical in the fetal and adult cells, supporting other studies (24) in which the electrophoretic mobility of fetal and adult red cells and also the concentration of N-acetylneuraminic acid were similar. Quantitative densitometry of the gels and calculations of the number of total polypeptides per ghost showed that fetal ghosts contain greater numbers of polypeptides than adult erythrocyte ghosts.…”
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