Anomaly in the γ chain heterogeneity of the newborn

  title={Anomaly in the γ chain heterogeneity of the newborn},
  author={T. H. Huisman and Walter A Schroeder and A G Felice and Darleen Powars and B. Ringelhann},
THE two types of γ chain in human foetal haemoglobin (HbF) are the products of nonallelic structural genes and have either glycine (Gγ type) or alanine (Aγ type) in position 136 (ref. 1). Although the examination of 108 cord blood samples from worldwide sources showed 102 to have a Gγ : Aγ ratio within a relatively narrow range, one had a low ratio and five… CONTINUE READING