Primary structure record 1FDH, DOI doi.org/10.2210/pdb1FDH/pdb ; human fetal deoxyhemoglobin, X-ray diffraction at 2.50 angstrom resolution, assembly A2B2 and alpha/gamma chain identities. Related primary citation: J. A. Frier and M. F. Perutz, Journal of Molecular Biology 112, 97–112 (1977), PMID 881729, DOI doi.org/10.1016/S0022-2836(77)80158-7 . The indexed publisher abstract discusses structural changes associated with lower fetal deoxyhemoglobin affinity for 2,3-diphosphoglycerate. Initials retained; no full-name or deposition-name identity inference.