Abstract
Hb Davenport is a new, stable a chain variant, that was detected in two members of a Caucasian family living in Iowa. Hematological data were within normal limits. It is characterized by an Asn←-His replacement at position α 78. Mild acidic hydrolysis of the large α T-9 peptide, separation of the resulting fragments by reversed phase high performance liquid chromatography, and sequence analysis of a few of these peptides greatly facilitated the identification of this substitution.