tokens: Cell hemoglobinization was accompanied by the increased expression of genes encoding gamma-globin and porphobilinogen deaminase ( PBGD ) , an enzyme of heme synthesis .
folded_tokens: cell hemoglobinization was accompanied by the increased expression of genes encoding gamma-globin and porphobilinogen deaminase ( pbgd ) , an enzyme of heme synthesis .
labels: B-other_name I-other_name O O O O O O O B-DNA_family_or_group O B-protein_molecule I-protein_molecule I-protein_molecule I-protein_molecule O B-protein_molecule O O O O O B-other_organic_compound O O