title: Nearest neighbor procedure for relating progressively aligned amino acid sequences.
authors.forename: R F
authors.initials: RF
authors.lastname: Doolittle
authors.forename: D F
authors.initials: DF
authors.lastname: Feng
mesh_terms: D000595:Amino Acid Sequence; D000818:Animals; D005075:Biological Evolution; D006454:Hemoglobins / Q000235:genetics; D006801:Humans; D008957:Models, Genetic; D015233:Models, Statistical; D009154:Mutation; D009211:Myoglobin / Q000235:genetics; D010802:Phylogeny; D012689:Sequence Homology, Nucleic Acid; D012984:Software
chemical_list: D006454:Hemoglobins; D009211:Myoglobin