tokens: Initiation of DNA replication requires the function of MCM gene products , which participate in ensuring that DNA replication occurs only once in the cell cycle .
folded_tokens: initiation of dna replication requires the function of mcm gene products , which participate in ensuring that dna replication occurs only once in the cell cycle .
labels: O O B-other_name I-other_name O O O O B-protein_family_or_group I-protein_family_or_group I-protein_family_or_group O O O O O O B-other_name I-other_name O O O O O B-other_name I-other_name O